50km
1 course
Yuba Gold
North Bloomfield, California · 🇺🇸 United States
LiveDates to be confirmedTrailGPX
Upcoming races
October2026· 60 races
Thu 01.10.1 race
Fri 02.10.2 races
12 courses
Back On The Ranch Trail Run
Los Olivos, California · 🇺🇸 United States
Trail
345km
1 course
The Mammoth
Mammoth Lakes, California · 🇺🇸 United States
9’476 m D+
Ultra
GPX
GPXSat 03.10.5 races
21.1–72.6km
4 courses
SGRAIL Marin - Triathlon & Trail Half Marathon
Marin County, California · 🇺🇸 United States
UltraGPX
21.1km
1 course
Star City San Bruno Mountain Trail Half Marathon
Brisbane, California · 🇺🇸 United States
732 m D+
Trail
100km
1 course
Cuyamaca 100k
San Diego, California · 🇺🇸 United States
2’682 m D+
UltraGPX
14.7km
4 courses
Cirque Series - Mt Baldy, CA
Mt Baldy, California · 🇺🇸 United States
1’197 m D+
Trail
160.9km
1 course
Angeles Crest 100 Mile Endurance Run
Altadena, California · 🇺🇸 United States
UltraGPX
Sun 04.10.3 races
4–21.1km
3 courses
Run by the Sea
Santa Cruz, California · 🇺🇸 United States
Trail
5–21.1km
4 courses
Kokanee Trail Runs
South Lake Tahoe, California · 🇺🇸 United States
188–423 m D+
Trail
5km
1 course
Palos Verdes Trails 5K
Palos Verdes Peninsula, California · 🇺🇸 United States
Trail
Fri 09.10.1 race
10.5–162km
5 courses
Kodiak Ultra Marathons by UTMB
Big Bear Lake, California · 🇺🇸 United States
280–4’850 m D+
Ultra
GPX
GPXSat 10.10.10 races
20km
1 course
Mountain Tiger Diablo
Clayton, California · 🇺🇸 United States
1’219 m D+
Trail
5–15km
3 courses
Carmel Valley Trail 15K 10K and 5K
San Diego, California · 🇺🇸 United States
44–270 m D+
Trail
8.1–50km
3 courses
Sunset & Cider Trail Races
Auburn, California · 🇺🇸 United States
213–1’189 m D+
TrailGPX
80.5km
1 course
That's No Moon Ultras 50M
Silverado, California · 🇺🇸 United States
Ultra
42.2–100km
5 courses
Ruth Anderson Memorial Endurance Run
San Francisco, California · 🇺🇸 United States
Ultra
5–10km
2 courses
Rock It in Chino Hills 5K & 10K
Chino Hills, California · 🇺🇸 United States
TrailGPX
40.2–80.5km
2 courses
Euchre Bar Massacre
Foresthill, California · 🇺🇸 United States
Ultra
5–35km
4 courses
Reservoir Dogs Trail Race
Orinda, California · 🇺🇸 United States
61–762 m D+
Trail
30–80.5km
3 courses
That's No Moon
Silverado, California · 🇺🇸 United States
884–2’877 m D+
UltraGPX
10.6–18.4km
2 courses
Granite Head Trails and Ales
Granite Bay, California · 🇺🇸 United States
Trail
Sun 11.10.1 race
10–50km
4 courses
Bizz Johnson
Susanville, California · 🇺🇸 United States
Trail
Sat 17.10.14 races
5km
1 course
Willow Hills XC
Folsom, California · 🇺🇸 United States
Trail
5–21.1km
3 courses
Heart of Cool Trail Run
Cool, California · 🇺🇸 United States
TrailGPX
10–21.1km
2 courses
Quicksilver Trail Challenge
San Jose, California · 🇺🇸 United States
TrailGPX
1 course
ARAVAIPA's OC Trail Runners Group Run
Newport Coast, California · 🇺🇸 United States
Trail
10–21.1km
2 courses
John Wayne Grit Series – Lone Pine
Lone Pine, California · 🇺🇸 United States
Trail
5–160.9km
9 courses
Cahuilla Rez Ultra
Anza, California · 🇺🇸 United States
427–2’591 m D+
Ultra
1.6–50km
7 courses
Lake Hodges Trail Festival
San Diego, California · 🇺🇸 United States
Trail
5–50km
5 courses
The Peak 50K, Marathon & Half Marathon
Lake Cuyamaca, Julian, CA, California · 🇺🇸 United States
Trail
1.6–21.1km
5 courses
California Gold Rush Trail Run - Fall
Coloma, California · 🇺🇸 United States
183–760 m D+
Trail
80.5–115.9km
2 courses
Tahoe Midnight Express Ultra 72
South Lake Tahoe, California · 🇺🇸 United States
Ultra
12.9–50km
3 courses
The Jackalope Lope
Redding, California · 🇺🇸 United States
TrailGPX
42.2–160.9km
3 courses
Sonoma Fall Classic
Lake Sonoma Recreation Area, Geyserville, CA, California · 🇺🇸 United States
UltraGPX
5–22.4km
4 courses
SPACEROCK Trail Race
Agua Dulce, California · 🇺🇸 United States
152–892 m D+
TrailGPX
5–30km
4 courses
Diablo Summit Stomp
Walnut Creek, California · 🇺🇸 United States
Trail
Sun 18.10.3 races
6.4–21.1km
2 courses
Fleet Feet Fall Classic - Trail October 18th, 2026
Chico, California · 🇺🇸 United States
488 m D+
TrailGPX
5–42.2km
4 courses
Cloverdale Vineyard Races
Cloverdale, California · 🇺🇸 United States
Trail
6.1km
1 course
TCRS #9
Point Reyes, California · 🇺🇸 United States
Trail
Thu 22.10.1 race
7.4–7.7km
7 courses
Weekend at Burney
Cassel, California · 🇺🇸 United States
113 m D+
Trail
Fri 23.10.1 race
6.7km
1 course
NorCal Backyard Ultra
Granite Bay, California · 🇺🇸 United States
98 m D+
TrailGPX
Sat 24.10.10 races
12–160km
5 courses
Island View Endurance Run
Goleta, California · 🇺🇸 United States
558–73’333 m D+
Ultra
5–50km
4 courses
No Name 5030
Woodland Hills, California · 🇺🇸 United States
Trail
10–36.6km
4 courses
Oakland Hills Trail Run
Oakland, California · 🇺🇸 United States
381–1’387 m D+
TrailGPX
5–10km
2 courses
Haunted Corner 5K, 10K Pleasant Hill
Pleasant Hill, California · 🇺🇸 United States
Trail
5–50km
5 courses
Range of Light Trail Races
Bishop, California · 🇺🇸 United States
TrailGPX
2 courses
The Rubicon
Oxbow Reservoir, California · 🇺🇸 United States
Trail
6km
2 courses
Wildwood Canyon Trail Runs
Yucaipa, California · 🇺🇸 United States
Trail
10–21.1km
2 courses
Acorn Creek Trail Run
Pilot Hill, California · 🇺🇸 United States
Trail
13.1km
1 course
Headlands Half, Women’s Trail Half Marathon
Mill Valley, California · 🇺🇸 United States
2’000 m D+
Trail
10–42.2km
3 courses
Napa Wine Country Marathon, Half Marathon & 10K
Calistoga, California · 🇺🇸 United States
Trail
Wed 28.10.1 race
16.1–321.9km
5 courses
Machete Muertos 200
Perris, California · 🇺🇸 United States
Ultra
Fri 30.10.1 race
80.5–160.9km
2 courses
Machete Trail Madness 50 Miler
Perris, California · 🇺🇸 United States
Ultra
Sat 31.10.6 races
5–10km
2 courses
Haunted Sacramento 5K, 10K
Sacramento, California · 🇺🇸 United States
Trail
10–50km
5 courses
Caspers Trail Races
San Juan Capistrano, California · 🇺🇸 United States
245–1’508 m D+
Trail
2 courses
HALLOWEEN SPOOKTACULAR 6 HOUR AND 4 HOUR TRAIL RUN
Newport Coast, California · 🇺🇸 United States
Trail
0.1–42.2km
5 courses
ZombieRunner Halloween
San Jose, California · 🇺🇸 United States
Trail
5–50km
7 courses
Almaden Hills Trail Run (Fall)
San Jose, California · 🇺🇸 United States
Trail
10–21.1km
2 courses
ZombieRunner San Francisco Run
San Jose, California · 🇺🇸 United States
Trail
November2026· 33 races
Sun 01.11.2 races
1 course
Oakland Tech 5km/1 mile Race/Run/Walk Fundraiser
Oakland, California · 🇺🇸 United States
Trail
42.2km
1 course
Mount Laguna Trail Marathon
Mount Laguna, California · 🇺🇸 United States
TrailGPX
Sat 07.11.10 races
5–10km
2 courses
Epicpalooza
Moorpark, California · 🇺🇸 United States
Trail
1.6–13.1km
6 courses
Mermaid Trail Run
Woodside, California · 🇺🇸 United States
TrailGPX
5–80km
3 courses
Shelli Huether Veterans Day Honor Run
Brentwood, TN, California · 🇺🇸 United States
0 m D+
Ultra
0.1–50km
7 courses
Lake Chabot Trail Run
Castro Valley, California · 🇺🇸 United States
116–1’000 m D+
Trail
10–50km
5 courses
Mt. Tam Trail Run
Stinson Beach, California · 🇺🇸 United States
TrailGPX
10–42.2km
4 courses
The Saddleback Marathon
Silverado, California · 🇺🇸 United States
Trail
5–10km
2 courses
Mulholland Under the Stars Trail Race
Tarzana, California · 🇺🇸 United States
Trail
10–42.2km
3 courses
The Rock Cobbler Trail RUN 2.0
Bakersfield, California · 🇺🇸 United States
701–1’371 m D+
Trail
5–30km
8 courses
Rancho Hills Trail Run (Fall)
Morgan Hill, California · 🇺🇸 United States
Trail
50–160.9km
2 courses
Rio Del Lago 100 Mile Endurance Run
Folsom, California · 🇺🇸 United States
2’700 m D+
UltraGPX
Sun 08.11.3 races
10–50km
3 courses
Rancho Rumble
Santa Margarita, California · 🇺🇸 United States
Trail
1 course
Sri Chinmoy 6-Hour Race - San Diego
San Diego, California · 🇺🇸 United States
Trail
5km
1 course
TCRS #10
Redwood High School, California · 🇺🇸 United States
Trail
Fri 13.11.1 race
25–51km
2 courses
HOKA Pacific Trails California by UTMB
Santa Barbara, California · 🇺🇸 United States
650–1’550 m D+
TrailGPX
GPXSat 14.11.8 races
1 course
Roosters Backyard Ultra
San Diego, California · 🇺🇸 United States
Trail
4.8km
1 course
Konocti Climb 5K
Kelseyville, California · 🇺🇸 United States
495 m D+
Trail
5–50km
4 courses
Mind Over Mountains
Auburn, California · 🇺🇸 United States
Trail
3 courses
Go Wild! Santa Cruz 2 Hr, 4 Hr
Santa Cruz, California · 🇺🇸 United States
3’000 m D+
Trail
4.5km
2 courses
Live Oak Odyssey
Trabuco Canyon, California · 🇺🇸 United States
159 m D+
TrailGPX
1–21.1km
4 courses
Catalina Island Half-Marathon & 10K
Avalon, California · 🇺🇸 United States
Trail
30–50km
2 courses
Chino Hills Trail Run Series Fall
Brea, California · 🇺🇸 United States
Trail
5–21.1km
4 courses
ZombieRunner Quarry Lakes
Fremont, California · 🇺🇸 United States
Trail
Sun 15.11.1 race
5.1km
1 course
Patagonia Salmon Run 5K
Ventura, California · 🇺🇸 United States
Trail
Sat 21.11.2 races
80.5km
1 course
Griffith Park Trail Marathon
Los Angeles, California · 🇺🇸 United States
Ultra
7–10km
2 courses
The Wascally Wabbit Trail Race
Friant, California · 🇺🇸 United States
TrailGPX
Thu 26.11.4 races
5–21.1km
4 courses
Zoom Turkey Trot
San Jose, California · 🇺🇸 United States
Trail
5–10km
2 courses
Run Hunger Off the Divide 10K/5K Run
Cool, California · 🇺🇸 United States
Trail
5–42.2km
4 courses
The Wild Turkey
Granite Bay, California · 🇺🇸 United States
Trail
1–10km
3 courses
Turkey’s Revenge
Granite Bay, California · 🇺🇸 United States
Trail
Sat 28.11.2 races
45.7km
1 course
Quad Dipsea
Mill Valley, California · 🇺🇸 United States
2’804 m D+
Trail
160.9km
1 course
Boundiful 100 Mile Endurance Run
Hemet, California · 🇺🇸 United States
Ultra
December2026· 25 races
Fri 04.12.1 race
5–14.5km
3 courses
The Krampus Cross Country 5K/10K
San Francisco, California · 🇺🇸 United States
TrailGPX
Sat 05.12.8 races
10–31.3km
4 courses
Peacock Gap Trail Run
San Rafael, California · 🇺🇸 United States
347–834 m D+
TrailGPX
80.5km
1 course
Anza Borrego Cuyamaca 50 Mile Run
Julian, California · 🇺🇸 United States
Ultra
10–50km
3 courses
Over The Hill Track Club High Desert 50K & 30K
Ridgecrest, California · 🇺🇸 United States
560–853 m D+
Trail
5–50km
8 courses
Calero Trail Run - Winter
San Jose, California · 🇺🇸 United States
77–831 m D+
Trail
80.5km
1 course
Ray Miller 50 Mile Trail Race
Malibu, California · 🇺🇸 United States
3’000 m D+
Ultra
10–100km
4 courses
San Joaquin River Trail 50K & 100K Run
Friant, California · 🇺🇸 United States
Ultra
28km
1 course
Into the Wild Fremont Canyon 28.8k
Orange, California · 🇺🇸 United States
1’158 m D+
TrailGPX
10–50km
3 courses
OTHTC High Desert Ultra
Ridgecrest, California · 🇺🇸 United States
Trail
Sun 06.12.1 race
50–80.5km
2 courses
Hunter S. Thompson Fear & Loathing
San Francisco, California · 🇺🇸 United States
Ultra
Fri 11.12.1 race
1 course
The Wrath of Krampus: Last Person Standing
Yucaipa, California · 🇺🇸 United States
Trail
Sat 12.12.7 races
10–25km
3 courses
Hark the Herald Angels Run
Belvedere Tiburon, California · 🇺🇸 United States
Trail
5–50km
5 courses
Magnolia Magic River Trail Run
Pilot Hill, California · 🇺🇸 United States
159–1’772 m D+
Trail
21.1–50km
2 courses
Doomsday
Cool, California · 🇺🇸 United States
Trail
5–10km
2 courses
Holiday Hustle 5K, 10K Livermore
Livermore, California · 🇺🇸 United States
Trail
1–15km
3 courses
Crystal Cove Trail Run
Laguna Beach, California · 🇺🇸 United States
Trail
5–21.1km
3 courses
Summit Rock Half Marathon, 10K, 5K
Saratoga, California · 🇺🇸 United States
Trail
8–16.1km
3 courses
Dixon Lake 10 Miler and 10K
Escondido, California · 🇺🇸 United States
205–498 m D+
Trail
Sat 19.12.3 races
10–50km
5 courses
Woodside Ramble
Redwood City, California · 🇺🇸 United States
Trail
5–10km
2 courses
Holiday Hustle Sacramento 5K, 10K
Sacramento, California · 🇺🇸 United States
Trail
5–10km
2 courses
A Charlie Brown Christmas 5K/10K San Diego
Escondido, California · 🇺🇸 United States
Trail
Sun 20.12.1 race
10–42.2km
3 courses
Dirty December Trail Run
San Diego, California · 🇺🇸 United States
1’067 m D+
TrailGPX
Thu 24.12.1 race
1.6–21.1km
5 courses
Placerville's Holiday Jingle & Mingle Run
Placerville, California · 🇺🇸 United States
104–377 m D+
Trail
Thu 31.12.2 races
160.9km
3 courses
New Year’s One Day
San Jose, California · 🇺🇸 United States
Ultra
5–21.1km
3 courses
Brazen New Year’s Eve Half Marathon/10K/5K
Castro Valley, California · 🇺🇸 United States
TrailGPX
January2027· 19 races
Fri 01.01.2 races
5–16.1km
3 courses
Auburn Resolution Run
Auburn, California · 🇺🇸 United States
Trail
5–21.1km
3 courses
Brazen New Year’s Day
Castro Valley, California · 🇺🇸 United States
632 m D+
TrailGPX
Sat 02.01.1 race
5–50km
8 courses
Hacienda Hills Trail Run - Winter
San Jose, California · 🇺🇸 United States
229–2’173 m D+
Trail
Sat 09.01.4 races
1.6–80.5km
7 courses
San Diego 50 & Trail Runs
San Diego, California · 🇺🇸 United States
Ultra
80.5km
1 course
San Diego 50 Mile Trail
Escondido, California · 🇺🇸 United States
Dates to be confirmedUltra
8–50km
4 courses
No Hands Trail Run
Auburn, California · 🇺🇸 United States
Dates to be confirmedTrailGPX
80.5km
2 courses
Avalon Benefit 50 Mile Run
Avalon, California · 🇺🇸 United States
1’981 m D+
Ultra
Sat 16.01.2 races
3 courses
Hops and Spokes Mountain Bike Classic
Yucaipa, California · 🇺🇸 United States
Dates to be confirmedTrail
109.4–160.9km
2 courses
Backbone Trail Ultra
Santa Monica Mountains, California · 🇺🇸 United States
4’572 m D+
Dates to be confirmedUltra
Sun 17.01.1 race
8.1–50km
7 courses
Crystal Springs Trail Run
Woodside, California · 🇺🇸 United States
216–1’381 m D+
Trail
Sat 23.01.4 races
10–30km
3 courses
La Cuesta Ranch Trail Run
San Luis Obispo, California · 🇺🇸 United States
Trail
10–42.2km
3 courses
Pacifica Foothills Trail Run
Pacifica, California · 🇺🇸 United States
Dates to be confirmedTrailGPX
80.5km
1 course
Sean O'Brien 50 Mile Trail Race
Calabasas, California · 🇺🇸 United States
3’000 m D+
Dates to be confirmedUltra
1.6–50km
9 courses
Folsom Lake Sweetwater Trail Run
El Dorado Hills, California · 🇺🇸 United States
35–1’023 m D+
Trail
Sun 24.01.3 races
30–50km
2 courses
Calico Trail Run
Calico Ghost Town, California · 🇺🇸 United States
Trail
5–12.9km
3 courses
Hollywood Sign Run | Hike - 8M | 8K | 5K | Kid
Griffith Park, California · 🇺🇸 United States
Trail
5–50km
5 courses
Del Dios Trail Race
Escondido, California · 🇺🇸 United States
44–799 m D+
Trail
Fri 29.01.1 race
2 courses
24HR "The Grind"
Perris, California · 🇺🇸 United States
Dates to be confirmedTrail
Sat 30.01.1 race
5–13.1km
3 courses
Coyote Hills Half Marathon/10K/5K
Fremont, California · 🇺🇸 United States
33–207 m D+
TrailGPX
February2027· 22 races
Sat 06.02.9 races
10–50km
3 courses
Fort Ord Trail Run
Monterey, California · 🇺🇸 United States
274–1’311 m D+
TrailGPX
9.7–19.3km
2 courses
Turner's Tuff Ten
Jamestown, California · 🇺🇸 United States
Dates to be confirmedTrail
10–50km
2 courses
Dalton Canyon Ultra
Glendora, California · 🇺🇸 United States
Dates to be confirmedTrail
21.1–80.5km
5 courses
Jed Smith
Sacramento, California · 🇺🇸 United States
Ultra
50km
1 course
Mount Umunhum Trail Run
San Jose, California · 🇺🇸 United States
Dates to be confirmedTrail
80.5km
1 course
Monterey Ultra
Monterey, California · 🇺🇸 United States
Dates to be confirmedUltra
80.5km
1 course
Golden Gate Trail Classic 50 Mile Race
San Francisco, California · 🇺🇸 United States
Dates to be confirmedUltra
5–50km
7 courses
Mt. Umunhum Trail Conquest-Winter
San Jose, California · 🇺🇸 United States
Dates to be confirmedTrail
3.2–50km
7 courses
Golden Gate Trail Run
Sausalito, California · 🇺🇸 United States
Dates to be confirmedTrailGPX
Sat 13.02.2 races
21.1–50km
3 courses
The Ranch 50k
Escondido, California · 🇺🇸 United States
825–1’926 m D+
Trail
5–21.1km
3 courses
Bay Breeze Half Marathon/10K/5K
San Leandro, California · 🇺🇸 United States
Trail
Sat 20.02.5 races
5–50km
5 courses
Chabot/Redtail Ridge Trail Run
Castro Valley, California · 🇺🇸 United States
49–1’463 m D+
Trail
0.1–49.9km
7 courses
Montara Mountain Trail Run
Pacifica, California · 🇺🇸 United States
366–2’042 m D+
Trail
10–32.2km
3 courses
San Pasqual Valley Trail Race
Escondido, California · 🇺🇸 United States
Dates to be confirmedTrailGPX
13–50km
4 courses
FOURmidable
Auburn, California · 🇺🇸 United States
1’829 m D+
Trail
48–100km
3 courses
Happy Chinese New Year
SAN DIEGO, California · 🇺🇸 United States
Dates to be confirmedUltra
Sat 27.02.5 races
21.1–100km
4 courses
Sycamore Canyon
Lakeside, California · 🇺🇸 United States
853–3’414 m D+
UltraGPX
160.9km
1 course
Will Rogers 24/12/6 Hour
Pacific Palisades, California · 🇺🇸 United States
Dates to be confirmedUltra
21.4–80.5km
2 courses
Salmon Falls 50k Endurance Run
Sacramento, California · 🇺🇸 United States
434–1’210 m D+
Trail
11–100km
4 courses
SoCalUltraTrail at Tejon Ranch
Tehachapi Mountains, California · 🇺🇸 United States
Dates to be confirmedUltra
6.4–21.1km
3 courses
Sanborn Trail Challenge
Saratoga, California · 🇺🇸 United States
Trail
Sun 28.02.1 race
3.2–24.1km
5 courses
Zoom Angel Island
Tiburon, California · 🇺🇸 United States
Dates to be confirmedTrail
March2027· 26 races
Sat 06.03.3 races
5–50km
6 courses
Mt Umunhum Trail Conquest
San Jose, California · 🇺🇸 United States
Dates to be confirmedTrail
5–31km
3 courses
Chanoko Ultras and Trail Run
Folsom Lake, California · 🇺🇸 United States
Trail
16.1–50km
2 courses
Way too Cool 50K
Cool, CA, California · 🇺🇸 United States
354–1’463 m D+
TrailGPX
Sun 07.03.2 races
5–21.1km
3 courses
FCancer Race; Norcal Edition
Middletown, California · 🇺🇸 United States
Trail
5–21.1km
3 courses
Tesoro Viejo Spring Classic Half Marathon
Madera, California · 🇺🇸 United States
TrailGPX
Sat 13.03.9 races
50km
1 course
Folsom South Side Trail Run 50 km
Folsom, California · 🇺🇸 United States
Dates to be confirmedTrail
9.7–19.3km
2 courses
The Quest! Adventure Run
Auburn, California · 🇺🇸 United States
152–457 m D+
Trail
1.6–50km
7 courses
South Hills Single Track Trail Run
San Jose, California · 🇺🇸 United States
37–1’574 m D+
Trail
1–42.2km
4 courses
Catalina Island Marathon, 10K, 5K
Avalon, California · 🇺🇸 United States
Trail
5–21.1km
4 courses
Zoom San Francisco
San Francisco, California · 🇺🇸 United States
46–338 m D+
Trail
21.1–50km
3 courses
Old West Trails 50k and 30k Fun Run
Julian, California · 🇺🇸 United States
215–795 m D+
Trail
27.4–56.3km
2 courses
Nine Trails 35 Mile Endurance Run
Santa Barbara, California · 🇺🇸 United States
Trail
50km
1 course
Ruck a Chuck 50K
Foresthill, California · 🇺🇸 United States
Dates to be confirmedTrail
80.5km
1 course
Marin Ultra Challenge 50 Mile Race
Rodeo Beach, Sausalito, CA, California · 🇺🇸 United States
3’300 m D+
Dates to be confirmedUltra
Fri 19.03.2 races
28–100km
3 courses
Big Alta
San Rafael, California · 🇺🇸 United States
1’189–3’886 m D+
UltraGPX
4 courses
Pirate's Cove 6/12/24 hour Run/Hike
Julian, California · 🇺🇸 United States
Trail
Sat 20.03.6 races
0.1–50km
7 courses
Redwood (Spring) Trail Run
Oakland, California · 🇺🇸 United States
146–1’082 m D+
Trail
50km
1 course
Rattlesnake Dick
Cool, California · 🇺🇸 United States
Dates to be confirmedTrail
1 course
JTreequinox
Joshua Tree, California · 🇺🇸 United States
Dates to be confirmedTrail
11.2–50km
3 courses
VALENCIA Trail Race
Valencia, California · 🇺🇸 United States
389–1’641 m D+
TrailGPX
5–42.2km
3 courses
NOLI INDIAN SCHOOL TRAIL RACES
San Jacinto, California · 🇺🇸 United States
Dates to be confirmedTrail
10–21.1km
2 courses
John Wayne Grit Series – Pioneertown, CA Half Marathon & 10K
Pioneertown, California · 🇺🇸 United States
Trail
Sat 27.03.4 races
5–10km
2 courses
Coast to Crest 10K and 5K
Del Mar, California · 🇺🇸 United States
29–42 m D+
Trail
5.6–33.4km
4 courses
Knickerbocker Canyon Trail Run
Auburn, California · 🇺🇸 United States
198–1’463 m D+
TrailGPX
10–50km
3 courses
Great Shasta Rail Trail
Burney, California · 🇺🇸 United States
Trail
6.7km
1 course
Bad Ass Backyard Ultra
Rio Linda, California · 🇺🇸 United States
9 m D+
TrailGPX
April2027· 32 races
Thu 01.04.1 race
80.5km
1 course
Yubaneer
Nevada City, CA, California · 🇺🇸 United States
Dates to be confirmedUltra
Sat 03.04.5 races
6–16.1km
2 courses
Rock It in El Moro Canyon 6K & 10 Miler
Laguna Beach, California · 🇺🇸 United States
Dates to be confirmedTrail
21.1km
1 course
Cool-Auburn Pub Run
Cool, CA, California · 🇺🇸 United States
TrailGPX
40.2–80.5km
2 courses
American River 50 Mile Endurance Run
Folsom, California · 🇺🇸 United States
1’190–1’647 m D+
Ultra
1.6–108km
9 courses
Bedrock Valley Trail Runs
Hemet, California · 🇺🇸 United States
Dates to be confirmedUltra
95km
1 course
Santa Barbara Tough Enough
Santa Barbara, California · 🇺🇸 United States
Dates to be confirmedUltra
Sun 04.04.1 race
5km
1 course
Creek Cut Wine Run 5k
Paso Robles, California · 🇺🇸 United States
Trail
Sat 10.04.5 races
50–100km
2 courses
Lake Sonoma 100K & 50K
Healdsburg, California · 🇺🇸 United States
Dates to be confirmedUltra
1.6–21.1km
6 courses
Nature Made Great Race: Half Marathon, 5K, 10K, 15K, 10M, 1M
Agoura Hills, California · 🇺🇸 United States
Dates to be confirmedTrail
21.1–100km
4 courses
Lake Sonoma
Lake Sonoma, California · 🇺🇸 United States
713–4’572 m D+
Ultra
50km
1 course
Oriflamme 50K
Julian, California · 🇺🇸 United States
1’215 m D+
Trail
8–41.8km
4 courses
Run with the Burros
Ridgecrest, California · 🇺🇸 United States
Dates to be confirmedTrail
Sun 11.04.1 race
50km
1 course
Napa Valley 50k Trail Race
Calistoga, California · 🇺🇸 United States
Dates to be confirmedTrail
Sat 17.04.8 races
50km
1 course
Mendocino Coast 50K
Mendocino, California · 🇺🇸 United States
Trail
130.4km
1 course
Badwater Salton Sea
Borrego Springs, California · 🇺🇸 United States
2’740 m D+
Dates to be confirmedUltra
50km
1 course
Woodside Purisima Creek Crossover
Redwood City, California · 🇺🇸 United States
Dates to be confirmedTrail
50km
1 course
Sierra Azul Trail Challenge
Los Gatos, California · 🇺🇸 United States
Dates to be confirmedTrail
80.5km
1 course
Outlands
Pilot Hill, California · 🇺🇸 United States
Dates to be confirmedUltra
3.2–50.1km
7 courses
Horseshoe Lake Trail Run
Los Gatos, California · 🇺🇸 United States
293–1’389 m D+
Trail
80.5–160.9km
2 courses
Leona Divide 50 Mile Run
Lake Hughes, California · 🇺🇸 United States
Dates to be confirmedUltra
12–160.9km
5 courses
Silver Moon Race 100 Mile Race
Reedley, California · 🇺🇸 United States
36–1’200 m D+
Ultra
Thu 22.04.2 races
25–161km
4 courses
The Canyons Endurance Runs by UTMB®
Auburn, California · 🇺🇸 United States
850–5’550 m D+
UltraGPX
GPX25–160.9km
4 courses
The Canyons Endurance 100 Miles Run
Auburn, California · 🇺🇸 United States
850–5’550 m D+
UltraGPX
GPXSat 24.04.4 races
54–100km
3 courses
Las Virgenes Canyon Ultra Trail Races
Los Angeles (West Hills), California · 🇺🇸 United States
Dates to be confirmedUltra
3.2–49.9km
7 courses
SPASM Lake Chabot Trail Run
Castro Valley, California · 🇺🇸 United States
116–1’000 m D+
Trail
3 courses
SoCal Redwood Race
Brea, California · 🇺🇸 United States
Dates to be confirmedTrail
5–15km
3 courses
No Foolin' Foot Race
San Carlos, California · 🇺🇸 United States
Dates to be confirmedTrail
Fri 30.04.5 races
6.7km
1 course
Harvest & Howitzer Backyard Ultra
Georgetown, California · 🇺🇸 United States
Trail
160.9km
1 course
Coyote Two Moon Ultras 100 Mile
Ojai, California · 🇺🇸 United States
8’500 m D+
Dates to be confirmedUltra
1 course
Big Burro 24HR
Big Bear Lake, California · 🇺🇸 United States
Trail
160.9km
1 course
San Diego 100 Mile Endurance Run
Mount Laguna, California · 🇺🇸 United States
2’300 m D+
Dates to be confirmedUltra
5–160.9km
9 courses
Lasse Viren Trail Races
Ojai, California · 🇺🇸 United States
5’009–8’045 m D+
TrailGPX
May2027· 22 races
Sat 01.05.6 races
8.1–21.1km
2 courses
Call of the Wild Half Marathon & 5 Mile
Glen Ellen, California · 🇺🇸 United States
Dates to be confirmedTrail
25–100km
4 courses
Sea to Sky
Jenner, CA, California · 🇺🇸 United States
Dates to be confirmedUltraGPX
100km
2 courses
Miwok 100K Trail Race presented by The North Face
Stinson Beach, California · 🇺🇸 United States
3’505 m D+
UltraGPX
80.5km
1 course
Wild Wild West 50M
Lone Pine, California · 🇺🇸 United States
Dates to be confirmedUltra
50km
1 course
Folsom Lake Trail Run - Spring 50K
Folsom, California · 🇺🇸 United States
Dates to be confirmedTrail
1.6–60km
8 courses
Santa Clarita Trail Race
Santa Clarita, California · 🇺🇸 United States
194–2’333 m D+
UltraGPX
Sat 08.05.4 races
5–50km
3 courses
John Wayne Grit Series – Newport Coast, CA 50K, 25K & 5K
Newport Coast, California · 🇺🇸 United States
Trail
7.2–50km
5 courses
Paiute Meadows Trail Run
Susanville, California · 🇺🇸 United States
111–642 m D+
Trail
42.2km
1 course
Dingneng Wang
San Diego, California · 🇺🇸 United States
Dates to be confirmedTrail
3.2–50km
7 courses
Grizzly Peak Trail Run
Berkeley, California · 🇺🇸 United States
323–2’061 m D+
Trail
Fri 14.05.1 race
160.9km
1 course
Born to Run Ultra 100 Mile Marathon
Los Olivos, California · 🇺🇸 United States
Dates to be confirmedUltra
Sat 15.05.4 races
10–50km
5 courses
O'Neill Park Trail Races
Trabuco Canyon, California · 🇺🇸 United States
105–979 m D+
Trail
10–50km
4 courses
Napa Wilderness Trail Runs
Napa, California · 🇺🇸 United States
Dates to be confirmedTrail
80.5km
1 course
Rim Rock 50 Mile Trail Challenge
Napa, California · 🇺🇸 United States
Dates to be confirmedUltra
80.5km
1 course
Bishop High Sierra Ultramarathons 50 Miles
Bishop, California · 🇺🇸 United States
3’100 m D+
Dates to be confirmedUltra
Sun 16.05.1 race
50km
1 course
Corral Canyon Trail Scramble
Campo, California · 🇺🇸 United States
Dates to be confirmedTrail
Sat 22.05.2 races
10–50km
3 courses
Run for Amma
Los Gatos, California · 🇺🇸 United States
Trail
5–50km
3 courses
Mission Trails Twilight Runs
San Diego, California · 🇺🇸 United States
1’097–2’195 m D+
Trail
Sat 29.05.3 races
160.9km
2 courses
Nanny Goat Trail Races
Riverside, California · 🇺🇸 United States
Dates to be confirmedUltra
21–50km
2 courses
Pacifico Ultra
Angeles National Forest, California · 🇺🇸 United States
Dates to be confirmedTrail
50km
1 course
Calero Run 50K
San Jose, California · 🇺🇸 United States
Dates to be confirmedTrail
Sun 30.05.1 race
50km
1 course
Run the Rim
Arnold, California · 🇺🇸 United States
Dates to be confirmedTrail
June2027· 17 races
Sat 05.06.5 races
80.5km
1 course
PCT 50 Mile Trail Run
Pine Valley, California · 🇺🇸 United States
900 m D+
Dates to be confirmedUltra
50km
1 course
Shadow of the Giants 50K
Fish Camp, California · 🇺🇸 United States
Dates to be confirmedTrail
3.2–50km
7 courses
Cinderella Trail Run
Oakland, California · 🇺🇸 United States
Dates to be confirmedTrail
80.5km
1 course
Malibu Canyon Trail Races (SAMO 50 Mile)
Malibu, California · 🇺🇸 United States
Dates to be confirmedUltra
4.8–14.5km
3 courses
Trails n Vines Wine Run
Escondido, California · 🇺🇸 United States
108–324 m D+
Trail
Sun 06.06.2 races
8.1–42.2km
2 courses
Griffith Park Trail Marathon Relay & 8K
Griffith Park, California · 🇺🇸 United States
Trail
5–21.1km
2 courses
2027 Lake Chabot Trail Challenge (Half Marathon & 5K)
Castro Valley, California · 🇺🇸 United States
Dates to be confirmedTrail
Sat 12.06.4 races
160.9km
1 course
Cool Moon 100 Mile Endurance Run
Cool, California · 🇺🇸 United States
Dates to be confirmedUltra
7–22km
3 courses
Bizz Johnson's Southside Scramble
Susanville, California · 🇺🇸 United States
Trail
3 courses
Bay Area 100 Training Camp
Berkeley, California · 🇺🇸 United States
Trail
160km
1 course
Bay Area 100
Berkeley, California · 🇺🇸 United States
5’486 m D+
UltraGPX
GPXSun 13.06.1 race
11.9km
1 course
The Dipsea Race
Mill Valley, California · 🇺🇸 United States
Dates to be confirmedTrail
Fri 18.06.2 races
160.9km
1 course
Burney Mountain 100
Cassel, California · 🇺🇸 United States
Dates to be confirmedUltra
46km
1 course
Broken Arrow SkyRace
Palisades Tahoe, California · 🇺🇸 United States
1’433 m D+
Dates to be confirmedTrail
Sat 19.06.1 race
10–52km
3 courses
Headwaters Trail Runs
Mount Shasta City, California · 🇺🇸 United States
122–2’438 m D+
Trail
Mon 21.06.1 race
321.9km
1 course
Tahoe 200 Endurance Run
Heavenly Stagecoach Lodge, California · 🇺🇸 United States
9’783 m D+
Ultra
Sat 26.06.1 race
160.9km
1 course
Western States 100 Mile Endurance Run
Squaw Valley, California · 🇺🇸 United States
5’500 m D+
Dates to be confirmedUltra
July2027· 7 races
Fri 02.07.1 race
5–10km
3 courses
Burney Basin Days
Burney, California · 🇺🇸 United States
Trail
Sat 10.07.2 races
3.2–50km
6 courses
San Lorenzo River Trail Run
Santa Cruz, California · 🇺🇸 United States
Dates to be confirmedTrail
21.1km
1 course
Iron X
Auburn, California · 🇺🇸 United States
TrailGPX
Sat 17.07.2 races
12–50km
11 courses
Elder Creek Night Runs
Elder Creek, California · 🇺🇸 United States
Dates to be confirmedTrail
14.8–80.5km
4 courses
Harding Hustle
Silverado, California · 🇺🇸 United States
636–1’806 m D+
Dates to be confirmedTrailGPX
Fri 23.07.2 races
11.3–100km
4 courses
Lost Sierra Endurance Race
Downieville, California · 🇺🇸 United States
710–3’285 m D+
UltraGPX
21.1–160.9km
9 courses
South Bay 24 HR
San Diego, California · 🇺🇸 United States
Ultra
August2027· 10 races
Sun 08.08.1 race
3.2–21.1km
5 courses
SAR Wild Run
Shaver Lake, California · 🇺🇸 United States
Dates to be confirmedTrail
Sat 14.08.2 races
5–42.2km
3 courses
Mount Madonna Challenge
Gilroy, California · 🇺🇸 United States
257–862 m D+
Dates to be confirmedTrailGPX
9–50km
4 courses
Thunder Mountain Trail Challenge
Horse Canyon Trail Junction, California · 🇺🇸 United States
2’286 m D+
Dates to be confirmedTrail
Sat 21.08.3 races
50km
2 courses
Tamalpa Headlands 50K
Muir Beach, California · 🇺🇸 United States
2’012 m D+
Dates to be confirmedTrailGPX
25–50km
2 courses
The Bulldog Ultra
Malibu Creek State Park, California · 🇺🇸 United States
Dates to be confirmedTrailGPX
3.2–50km
7 courses
Redwood (Summer) Trail Run
Oakland, California · 🇺🇸 United States
Dates to be confirmedTrail
Fri 27.08.1 race
5–30km
3 courses
Windfall Full Moon Trail Run
Alpine, California · 🇺🇸 United States
Dates to be confirmedTrail
Sat 28.08.3 races
5–50km
7 courses
Trail Run at Sly Park - Summer
Pollock Pines, California · 🇺🇸 United States
164–1’524 m D+
Dates to be confirmedTrail
10–42.2km
4 courses
Santa Cruz Trail Run
Felton, California · 🇺🇸 United States
300–990 m D+
Dates to be confirmedTrailGPX
3.2–49.7km
7 courses
SPASM Crystal Springs Trail Run
Woodside, California · 🇺🇸 United States
216–1’381 m D+
Dates to be confirmedTrail
September2027· 15 races
Sat 04.09.2 races
5–24.1km
3 courses
Colby Mountain Trailfest
Butte Meadows, California · 🇺🇸 United States
30–579 m D+
Dates to be confirmedTrail
16–50km
2 courses
Noble Canyon 50K/15K
Pine Valley, California · 🇺🇸 United States
412–1’274 m D+
Dates to be confirmedTrailGPX
Sun 05.09.2 races
10–21.1km
2 courses
Mammoth Bar Trail Runs
Auburn, California · 🇺🇸 United States
Dates to be confirmedTrail
3.2–48.9km
7 courses
Diablo Trail Run
Clayton, California · 🇺🇸 United States
122–2’438 m D+
Trail
Sat 11.09.3 races
9.7–50km
4 courses
Berkeley Trail Adventure
Berkeley, California · 🇺🇸 United States
320–2’073 m D+
Dates to be confirmedTrailGPX
10–42.2km
4 courses
Mendocino Running Festival
Mendocino, California · 🇺🇸 United States
Dates to be confirmedTrail
11–42.2km
2 courses
Stevens Creek Striders Reservoir Run
Cupertino, California · 🇺🇸 United States
Dates to be confirmedTrail
Sun 12.09.1 race
5–21.1km
3 courses
The Honey Badger Half (& 10K/5K)
Santa Venetia, California · 🇺🇸 United States
46–457 m D+
Dates to be confirmedTrailGPX
Fri 17.09.1 race
10–20km
4 courses
Tierra Redonda Mountain Trail Run
Bradley, California · 🇺🇸 United States
Dates to be confirmedTrail
Sat 18.09.4 races
6.4–33.8km
3 courses
Zanja Peak Endurance Challenge
Yucaipa, California · 🇺🇸 United States
Dates to be confirmedTrail
10km
1 course
Red Rock Sunsewt Rumble
Topanga, California · 🇺🇸 United States
1’360 m D+
Dates to be confirmedTrail
5–21.1km
3 courses
Rocky Ridge Half Marathon 10K & 5K Brazen Championships
San Ramon, California · 🇺🇸 United States
Dates to be confirmedTrail
5–16.1km
2 courses
Gold Rush Growler 10 Mile & 5K Trail Runs
Granite Bay, California · 🇺🇸 United States
Dates to be confirmedTrail
Sun 19.09.1 race
8.1km
1 course
TCRS #8
Ring Mountain, California · 🇺🇸 United States
Dates to be confirmedTrail
Mon 20.09.1 race
5–10km
2 courses
Half Moon Bay Beach Safety Run
Half Moon Bay, California · 🇺🇸 United States
Dates to be confirmedTrail
Other regions · United States
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