50–160.9km
3 courses
The Hennepin Hundred
Sterling, Illinois · 🇺🇸 United States
Ultra
Upcoming races
October2026· 16 races
Sat 03.10.4 races
5–8km
2 courses
Easter Seals Run the Woods 5K
Hudson, Illinois · 🇺🇸 United States
Trail
5km
1 course
Autumn Leaf Run
Freeport, Illinois · 🇺🇸 United States
Trail
80.5–160.9km
2 courses
The Hennepin Hundred - 50 Mile Run
Sterling, Illinois · 🇺🇸 United States
Ultra
Sat 10.10.3 races
80.5–160.9km
2 courses
Farmdale Trail Run 50 Mile
East Peoria, Illinois · 🇺🇸 United States
Ultra
80.5km
1 course
Des Plaines River 50 Miles Trail Race
Libertyville, Illinois · 🇺🇸 United States
165 m D+
Ultra
10 courses
Arrowhead Endurance Run
Johnston City, Illinois · 🇺🇸 United States
Trail
Sat 17.10.2 races
7.2km
1 course
Saw Wee Kee Fall Trail Run
Yorkville, Illinois · 🇺🇸 United States
Trail
8.1–16.1km
2 courses
Soul Crusher
Crystal Lake, Illinois · 🇺🇸 United States
Trail
Sun 18.10.2 races
5km
1 course
Run with the Nuns 5K
Lemont, Illinois · 🇺🇸 United States
Trail
5–100km
5 courses
Shake Your Trail Feather Trail Run
Charleston, Illinois · 🇺🇸 United States
Ultra
Fri 23.10.1 race
5km
1 course
Haunted Highlander Assault Trail Run
Pingree Grove, Illinois · 🇺🇸 United States
Trail
Sat 24.10.2 races
8.1–50km
3 courses
Fancy Nonsense
Deer Grove Forest Preserve, Illinois · 🇺🇸 United States
Trail
28km
1 course
OUTLAST CHICAGO
Chicago, Illinois · 🇺🇸 United States
0 m D+
Trail
Sun 25.10.1 race
9.2km
1 course
Allerton Park Trail Run
Monticello, Illinois · 🇺🇸 United States
Trail
Sat 31.10.1 race
5–10km
2 courses
MCDD Beaver Dam Dash
Shipman, Illinois · 🇺🇸 United States
Trail
November2026· 6 races
Sat 07.11.1 race
5km
1 course
Eckerts Belleville Farm Wine Run Turkey Trot 5k
Belleville, Illinois · 🇺🇸 United States
0 m D+
Trail
Sat 14.11.4 races
10–59.9km
4 courses
The Forge Trail Run Festival
Lemont, Illinois · 🇺🇸 United States
Trail
4.8–14.5km
3 courses
Feral Nonsense
Morton Grove, Illinois · 🇺🇸 United States
Trail
80.5–160.7km
3 courses
Tunnel Hill 100 & 50 mile runs
Vienna, Illinois · 🇺🇸 United States
152–315 m D+
Ultra
80.5km
1 course
McNotagain Fall Trail Runs
Pekin, Illinois · 🇺🇸 United States
Ultra
Sat 21.11.1 race
6.4–12.9km
2 courses
The Universal Sole November Trail Challenge
Willow Springs, Illinois · 🇺🇸 United States
Trail
December2026· 5 races
Sat 05.12.2 races
5–20km
4 courses
Yeti Winter Trail Series
Dixon, Illinois · 🇺🇸 United States
Trail
4–8km
3 courses
Da Deer Run Run
Hudson, Illinois · 🇺🇸 United States
Trail
Sat 12.12.2 races
7.2km
1 course
The Universal Sole December Trail Challenge
Chicago, Illinois · 🇺🇸 United States
Trail
12.6km
1 course
Pere Marquette Endurance Trail Run
Grafton, Illinois · 🇺🇸 United States
Trail
Sun 13.12.1 race
50km
1 course
Lokalz 50 KM
Peoria, Illinois · 🇺🇸 United States
Trail
January2027· 2 races
Sat 09.01.1 race
10–50km
2 courses
Frozen Gnome
Crystal Lake, Illinois · 🇺🇸 United States
Trail
Sat 23.01.1 race
5–8km
6 courses
Fox Valley Winter Challenge Trail Series 5k/8k/10k
Batavia, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
February2027· 1 race
Sat 20.02.1 race
8km
1 course
Fox Valley Winter Challenge Trail Series 8K
Aurora, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
March2027· 6 races
Sat 13.03.1 race
10.5–21.1km
2 courses
Muddy Shamrock @ The Forge
Lemont, Illinois · 🇺🇸 United States
Trail
Sun 14.03.1 race
10km
1 course
Fox Valley Winter Challenge Trail Series 10K
St. Charles, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
Sat 20.03.2 races
90.1–181.9km
2 courses
American Bottoms
Columbia, Illinois · 🇺🇸 United States
241–485 m D+
Ultra
50km
1 course
Paleozoic Trail Runs - Ordovician Spring III 50K
Wood Springs, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
Sat 27.03.2 races
4 courses
SkunkApe 806/524/314 Trail Race
Dixon, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
16.1–48.3km
2 courses
Clinton Lake Ultra
DeWitt, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
April2027· 5 races
Fri 09.04.1 race
80.5–160.9km
2 courses
Potawatomi 50 Mile Trail Run
Pekin, Illinois · 🇺🇸 United States
2’500–5’000 m D+
Dates to be confirmedUltra
Sat 17.04.3 races
8.1–50km
3 courses
Earth Day 50k/15 Mile/5 Mile
Crystal Lake, Illinois · 🇺🇸 United States
Trail
80.5km
1 course
Loud Thunder 50 Mile Race
Illinois City, Illinois · 🇺🇸 United States
Dates to be confirmedUltra
8.1–50km
4 courses
Earth Day 50K and 15 miler
Crystal Lake, Illinois · 🇺🇸 United States
Trail
Sat 24.04.1 race
80.5km
1 course
Childish Nonsense 50 Mile Race
Palatine, Illinois · 🇺🇸 United States
Dates to be confirmedUltra
May2027· 3 races
Sun 02.05.1 race
5–10km
5 courses
Spring Stampede 5K/10K
Hanna City, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
Sat 08.05.1 race
16.1–42.2km
2 courses
F^3 Cap Sauers Trail Marathon & 10 Mile
Palos Hills, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
Sat 15.05.1 race
50km
1 course
The Piasa
Grafton, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
June2027· 1 race
Sat 05.06.1 race
6.7km
1 course
Elsa Chicken Plucker Backyard Ultra
Charleston, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
July2027· 1 race
Fri 09.07.1 race
80.5–160.9km
2 courses
Cry Me A River 50 Mile Trail Run
Chillicothe, Illinois · 🇺🇸 United States
7’100 m D+
Dates to be confirmedUltra
August2027· 7 races
Sat 07.08.1 race
5–50km
4 courses
Highlander Assault Obstacle Race
Pingree Grove, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
Sat 14.08.2 races
50km
1 course
The Next Loop Endurance Series | Deer Grove East
Palatine, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
8.1–24.1km
4 courses
Chupacabra Trail Races
Dixon, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
Sat 21.08.1 race
64.4–80.5km
3 courses
The Next Loop Endurance Series | Busse Woods
Elk Grove Village, Illinois · 🇺🇸 United States
Dates to be confirmedUltra
Sat 28.08.3 races
21.1–160.9km
5 courses
Shawnee Hills Trail Races
Ozark, Illinois · 🇺🇸 United States
Dates to be confirmedUltra
6.8–82.1km
6 courses
Comlara 12 Hour Sunrise-Sunset, 6 Hour, 3 Hour and Hour of Power Trail Run
Normal, Illinois · 🇺🇸 United States
Dates to be confirmedUltra
160.9km
1 course
Shawnee Hills 100 - 100 Mile
Ozark, Illinois · 🇺🇸 United States
Dates to be confirmedUltra
September2027· 4 races
Fri 10.09.1 race
10–85km
5 courses
Hobo Trail Runs 10k-25k-50k
Rockford, Illinois · 🇺🇸 United States
Dates to be confirmedUltra
Sat 11.09.1 race
5–50km
5 courses
CHICAGO TRAIL RUNNING FESTIVAL
Beecher, Illinois · 🇺🇸 United States
0 m D+
Dates to be confirmedTrail
Sat 18.09.1 race
16.1km
1 course
Tiger 10 Miler - 9th Annual Trail Race Presented by Byron Bank
Byron, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
Sun 19.09.1 race
1 course
QC JAVA JOG
Coal Valley, Illinois · 🇺🇸 United States
Dates to be confirmedTrail
Other regions · United States
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