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Maximum200 mi

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322 races

Durango Marathon
- Inaugural
Sun, Oct 11, 2026, 8:00 AM MDT13.1 Miles, 26.2 MilesDurango, CO
Serious TestRUN
Course · Road · Hilly · Timed race
Westy Half & 5k
Sun, Oct 11, 2026, 8:00 AM MDT5K, 13.1 MilesWestminster, CO
Push PotentialRUN
Course · Hilly · Timed race
Indian Creek Trail Runs
Better for experienced runners ready for a demanding trail effort.
Sat, Oct 17, 2026, 6:00 AM MDT5.5 Miles, 15 Miles, 35 Miles, 54 MilesSedalia, CO
Beast ModeULTRA
Course · Trail · Hilly
Blue Sky Trail Marathon & Half Marathon
Experience Fort Collins's premier trail marathon, a scenic and challenging journey through the Front Range hogbacks with a welcoming finish.
- Fun
- Scenic
- Competitive
Sat, Oct 17, 2026, 7:00 AM MDT
The Great Trailhead Foot Race 5 & 10 Miler
Sat, Oct 17, 2026, 9:00 AM MDT5 Miles, 10 MilesLakewood, CO
Push PotentialRUN
Course · Hilly · Timed race
Race to Cure Sarcoma Denver
Sat, Oct 24, 2026, 8:30 AM MDT1K, 5KDenver, CO
Steady EffortRUN
Course · Hilly · Timed race
YMCA of Pueblo Spooky Sprint 5K
Sat, Oct 24, 2026, 4:00 PM MDT5KPueblo, CO
Steady EffortRUN
Course · Hilly · Timed race
Ghosts and Goblins 5K/10K
Better when you want a walker-friendly, low-pressure day.
Sun, Oct 25, 2026, 9:00 AM MDT5KDenver, CO
Steady EffortRUN
Course · Rolling · Walkers welcome
PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA
A stress-free, supportive run with a sweet PB&J theme, where every mile you log after the race contributes to charity.
- Fun
- Quirky
- For a Cause
Sat, Oct 31, 2026, 7:30 AM MDT
Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA
Sat, Oct 31, 2026, 7:30 AM MDT1 Miles, 5K, 10K, 13.1 MilesCentennial, CO
Push PotentialRUN
Course · Hilly · Timed race
Spooky Sprint - Colorado Springs
A festive Halloween-themed run in Colorado Springs, perfect for families and runners seeking a fun, spirited race experience.
- Fun
- Festive
Sat, Oct 31, 2026, 8:00 AM MDT3.1 Miles, 6.2 MilesColorado Springs, CO
Push Potential
Foundry Halloween 5k
Sat, Oct 31, 2026, 9:00 AM MDT3.1 MilesSteamboat Springs, CO
Steady EffortRUN
Course · Hilly · Family-oriented
I Ain't Scared (of 5k)
Sat, Oct 31, 2026, 9:30 AM MDT3.1 MilesThornton, CO
Steady EffortRUN
Course · Hilly · Timed race
RMRR November Trophy Series
A low-key, competitive 15K or 5K in Denver's open space, featuring a unique handicap start for the 15K.
- Fun
- Scenic
- Competitive
- Quirky
All-Out Kooky-Spooky
Sun, Nov 1, 2026, 9:00 AM MST5K, 10K, 13.1 MilesGolden, CO
Push PotentialRUN
Course · Hilly · Timed race
Colorado 24 Hour Run
Push your limits for 6, 12, or 24 hours on a scenic dirt loop, enjoying a supportive atmosphere and fueling a great cause.
- Fun
- Scenic
- Competitive
- For a Cause
Turkey Trails- Denver
Embrace the holiday spirit with a family-friendly Thanksgiving-themed run in Denver, featuring distances for everyone and festive swag.
- Fun
- Festive
Sat, Nov 7, 2026, 8:00 AM MST50m, 1 Miles, 3.1 Miles, 6.2 Miles, 13.1 MilesDenver, CO
Push Potential
HRCA Backcountry Wilderness Half Marathon
A challenging trail half marathon in Colorado's scenic Backcountry Wilderness, offering breathtaking views and competitive cash prizes.
- Scenic
- Competitive
Sat, Nov 7, 2026, 9:00 AM MST13.1 MilesLone Tree, CO
Steady Effort
City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)
Sat, Nov 7, 2026, 9:00 AM MST1 Miles, 3.1 Miles, 6.2 MilesDenver, CO
Push PotentialRUN
Course · Rolling · Timed race
Bell Ringer 2 Miler
Run a meaningful 2-miler in Loveland, honoring veterans with a unique bell-ringing tradition and supporting a local assistance program.
- Festive
- For a Cause
Sat, Nov 7, 2026, 9:00 AM MST2 MilesLoveland, CO
Steady Effort
Alamosa Veterans Memorial Park Race
Sat, Nov 7, 2026, 10:00 AM MST10KAlamosa, CO
Steady EffortRUN
Course · Flat · Timed race
Turkey Trails - Colorado Springs
Better when you want a walker-friendly, low-pressure day.
Sun, Nov 8, 2026, 8:00 AM MST50m, 1 Miles, 3.1 Miles, 6.2 Miles, 13.1 MilesColorado Springs, CO
Push PotentialRUN
Course · Hilly · Walkers welcome
Colorado Springs Veterans Day 5k
Sun, Nov 8, 2026, 9:00 AM MST5KColorado Springs, CO
Push PotentialRUN
Course · Hilly · Timed race
Run for Mental Health 5K/10K/13.1 DENVER/AURORA
Run with purpose for mental health awareness in a supportive, stress-free group setting. All paces are welcome.
- For a Cause
Sat, Nov 14, 2026, 7:30 AM MST1 Miles, 5K, 10K, 13.1 MilesCentennial, CO
Push PotentialRUN

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