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Colorado

140 upcoming races

Upcoming races

October2026· 31 races

Sat 03.10.13 races

50–100km

3 courses

The Bear Chase

Lakewood, Colorado · 🇺🇸 United States

621–1’322 m D+

UltraGPX

30–42.2km

2 courses

West Elk Challenge

Paonia, Colorado · 🇺🇸 United States

1’219 m D+

Trail

28km

1 course

OUTLAST DENVER

Denver, Colorado · 🇺🇸 United States

0 m D+

Trail
Sun 04.10.2 races

1.6–5.6km

2 courses

Rubey Rescue Run

Aspen, Colorado · 🇺🇸 United States

Trail
Sat 10.10.2 races
Sat 17.10.7 races

10.5km

1 course

Chili Chase

Durango, Colorado · 🇺🇸 United States

Trail

5.9–50km

4 courses

Bobcat Trail Races

Colorado Springs, Colorado · 🇺🇸 United States

122–1’094 m D+

TrailGPX
Sun 18.10.1 race
Sat 24.10.4 races

10–80.5km

7 courses

Bridge Burner Ultra

Canon City, Colorado · 🇺🇸 United States

1’372 m D+

UltraGPX
Sun 25.10.1 race
Sat 31.10.1 race

November2026· 16 races

Sun 01.11.1 race
Sat 07.11.8 races

8.1–24.1km

3 courses

Fleet Foot Relay

Littleton, Colorado · 🇺🇸 United States

Trail

16–80km

5 courses

Kessel Run Ultra

Fruita, Colorado · 🇺🇸 United States

331–1’580 m D+

UltraGPX
Sun 08.11.1 race
Sat 14.11.2 races

5–21.1km

3 courses

Louisville Trail Race

Louisville, Colorado · 🇺🇸 United States

59–153 m D+

TrailGPX
Sun 15.11.2 races
Sat 21.11.1 race
Thu 26.11.1 race

December2026· 5 races

Sat 05.12.4 races
Sat 19.12.1 race

10km

1 course

Santa's Summit Slam

Estes Park, Colorado · 🇺🇸 United States

457 m D+

TrailGPX

January2027· 2 races

Fri 01.01.1 race

5–10km

2 courses

Search and Rescue Run

Colorado Springs, Colorado · 🇺🇸 United States

Dates to be confirmedTrail
Sat 09.01.1 race

34.8km

1 course

Frozen Devil's Head

Rampart Range, Colorado · 🇺🇸 United States

800 m D+

Trail

February2027· 5 races

Sat 06.02.3 races

10.8–31.5km

7 courses

Stories Trail Runs

Colorado Springs, Colorado · 🇺🇸 United States

Dates to be confirmedTrail
Sun 07.02.1 race

5–100km

4 courses

Old Man Winter Rally

Lyons, Colorado · 🇺🇸 United States

Dates to be confirmedUltraGPX
Sat 20.02.1 race

March2027· 2 races

Sat 06.03.1 race
Sat 13.03.1 race

April2027· 7 races

Sat 03.04.1 race
Fri 09.04.1 race
Sat 10.04.1 race
Sun 11.04.1 race

5–34.7km

4 courses

Mountain Ridge Trail Race

Highlands Ranch, Colorado · 🇺🇸 United States

183–410 m D+

Dates to be confirmedTrailGPX
Sat 17.04.1 race

5–50km

4 courses

Rattler Trail Race

Colorado Springs, Colorado · 🇺🇸 United States

121–1’180 m D+

Trail
Sat 24.04.1 race
Sun 25.04.1 race

May2027· 14 races

Sat 01.05.5 races

3.2km

1 course

Nielson Challenge May

Colorado Springs, Colorado · 🇺🇸 United States

Dates to be confirmedTrail

80.5–160.9km

2 courses

Niwot’s Challenge

Niwot, Colorado · 🇺🇸 United States

Dates to be confirmedUltra

40.2–80.5km

2 courses

Collegiate Peaks Races

Buena Vista, Colorado · 🇺🇸 United States

Dates to be confirmedUltra

5–8.1km

4 courses

Take 5 in the Garden

Colorado Springs, Colorado · 🇺🇸 United States

325–1’065 m D+

Trail
Sun 02.05.1 race

354.1km

3 courses

The Pilgrimage

Rabbit Valley Campground, Colorado · 🇺🇸 United States

1’801 m D+

Ultra
Sat 08.05.3 races

80.5km

1 course

Quad Rock 50 Mile

Bellvue, Colorado · 🇺🇸 United States

Dates to be confirmedUltra

6.4–50km

6 courses

Valkyrie Trail Race

Colorado Springs, Colorado · 🇺🇸 United States

132–1’298 m D+

Trail
Sat 15.05.1 race

11–42.7km

5 courses

Endure Trail Runs

Divide, Colorado · 🇺🇸 United States

Dates to be confirmedTrail
Sun 16.05.1 race

16–88.5km

5 courses

Ram Party

Colorado Springs, Colorado · 🇺🇸 United States

1’000–2’123 m D+

Dates to be confirmedUltraGPX
Sat 22.05.1 race

10.5–50km

3 courses

Samson's Revenge

Estes Park, Colorado · 🇺🇸 United States

1’829 m D+

TrailGPX
Sat 29.05.1 race
Sun 30.05.1 race

50–80.5km

2 courses

North Fork 50

Buffalo Creek, Colorado · 🇺🇸 United States

1’119–1’958 m D+

Dates to be confirmedUltraGPX

June2027· 14 races

Sat 05.06.5 races

3.2km

1 course

Nielson Challenge June

Colorado Springs, Colorado · 🇺🇸 United States

Dates to be confirmedTrail
Sat 12.06.1 race

9.8–54.6km

5 courses

Summits Trail Runs

Granby, Colorado · 🇺🇸 United States

Dates to be confirmedTrail
Sun 13.06.1 race

5–50km

5 courses

Barr Lake Trail Race

Brighton, Colorado · 🇺🇸 United States

12–146 m D+

Dates to be confirmedTrailGPX
Sat 19.06.1 race
Sun 20.06.1 race

35–100km

3 courses

Ring the Springs

Colorado Springs, Colorado · 🇺🇸 United States

1’032–3’372 m D+

Dates to be confirmedUltraGPX
Fri 25.06.1 race
Sat 26.06.3 races

5–21.2km

3 courses

The Sunlight Showdown

Glenwood Springs, Colorado · 🇺🇸 United States

914 m D+

Dates to be confirmedTrail

5–16.1km

3 courses

Timberview Trail Run

Bellvue, Colorado · 🇺🇸 United States

Dates to be confirmedTrail

1.6–10km

2 courses

Rueter-Hess Trail Run

Parker, CO, Colorado · 🇺🇸 United States

183 m D+

Dates to be confirmedTrailGPX
Sun 27.06.1 race

16.6–50km

3 courses

Chase The Moon

Highlands Ranch, Colorado · 🇺🇸 United States

265 m D+

Dates to be confirmedTrail

July2027· 15 races

Sat 03.07.1 race

3.2km

1 course

Nielson Challenge July

Colorado Springs, Colorado · 🇺🇸 United States

Dates to be confirmedTrail
Fri 09.07.3 races

17.4–170.9km

6 courses

Silverheels Trail Runs

Como, Colorado · 🇺🇸 United States

Dates to be confirmedUltra
Sat 10.07.2 races
Fri 16.07.1 race

160.9km

1 course

High Lonesome 100 Mile

Mount Princeton, Colorado · 🇺🇸 United States

7’102 m D+

UltraGPX
Sat 17.07.1 race

13.5–51.2km

3 courses

Silverton Alpine

Silverton, Colorado · 🇺🇸 United States

116–1’392 m D+

Dates to be confirmedTrailGPX
Sun 18.07.2 races

11–19.3km

2 courses

Kendall

Silverton, Colorado · 🇺🇸 United States

493–1’207 m D+

Dates to be confirmedTrailGPX

20.3km

1 course

Barr Trail Mountain Race

Manitou Springs, Colorado · 🇺🇸 United States

1’106 m D+

Dates to be confirmedTrail
Sat 24.07.3 races

80.5km

1 course

Creede 50

Creede, Colorado · 🇺🇸 United States

Dates to be confirmedUltra

160.9km

1 course

Creede 100

Creede, Colorado · 🇺🇸 United States

Dates to be confirmedUltra
Mon 26.07.1 race

321.9km

1 course

The Summit 200

Summit County, Colorado, Colorado · 🇺🇸 United States

12’192 m D+

Trail
Sat 31.07.1 race

August2027· 15 races

Fri 06.08.1 race

160.9km

1 course

High Five 100

Lake City, Colorado · 🇺🇸 United States

Dates to be confirmedUltra
Sat 07.08.4 races

23.5–48.9km

3 courses

Aspen Backcountry

Aspen, CO, Colorado · 🇺🇸 United States

966–1’680 m D+

Dates to be confirmedTrailGPX

10–50km

3 courses

Winter Park Trail Runs

Winter Park, Colorado · 🇺🇸 United States

Dates to be confirmedTrail
Fri 13.08.1 race

166.4km

1 course

San Juan Softie 100

Durango, Colorado · 🇺🇸 United States

5’791 m D+

Dates to be confirmedUltra
Sat 14.08.1 race

12.9–25.8km

2 courses

Pat's Pony Express

Woodland Park, Colorado · 🇺🇸 United States

Dates to be confirmedTrail
Sat 21.08.3 races

50–80.5km

2 courses

Roxborough Ultras

Roxborough State Park, Colorado · 🇺🇸 United States

Dates to be confirmedUltraGPX

6–50km

5 courses

Westminster Trail Races

Westminster, Colorado · 🇺🇸 United States

87–522 m D+

Dates to be confirmedTrailGPX
Sat 28.08.5 races

23–104.6km

5 courses

Telluride Mountain Run

Telluride, Colorado · 🇺🇸 United States

1’675–6’850 m D+

Ultra

5–50km

4 courses

Rock Hawk

Castle Rock, Colorado · 🇺🇸 United States

104–1’013 m D+

Dates to be confirmedTrailGPX

September2027· 14 races

Wed 01.09.1 race
Thu 02.09.1 race
Sat 04.09.1 race

3.2–50km

4 courses

Creede Mountain Run

Creede, Colorado · 🇺🇸 United States

Dates to be confirmedTrail
Fri 10.09.1 race

160.9km

4 courses

American Heroes Run

Longmont, Colorado · 🇺🇸 United States

Dates to be confirmedUltra
Sat 11.09.4 races

22–50km

2 courses

Devil on the Divide

Empire, Colorado · 🇺🇸 United States

3’400–6’500 m D+

Dates to be confirmedTrail

5–50km

5 courses

Snow Mountain Ranch

Granby, Colorado · 🇺🇸 United States

123–1’291 m D+

Dates to be confirmedTrailGPX
Fri 17.09.2 races

160.9km

1 course

Run Rabbit Run

Steamboat Springs, Colorado · 🇺🇸 United States

6’215 m D+

Dates to be confirmedUltra
Sat 18.09.4 races

11.9–16.1km

2 courses

Break of Dawn Trail Run

Golden, Colorado · 🇺🇸 United States

320 m D+

Dates to be confirmedTrail

1–42.2km

5 courses

Autumn Run

Buena Vista, Colorado · 🇺🇸 United States

Dates to be confirmedTrail

5–21.1km

4 courses

Beulah Challenge Run

Beulah, Colorado · 🇺🇸 United States

73 m D+

Dates to be confirmedTrail

Other regions · United States

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