Events
Race Directors

50 Miles Ultra Running Events in Colorado

All 50 KM 50 Miles 100 KM 100 Miles 6 Hours 12 Hours 24 Hours

Upcoming Events

Date Event City Distances
07/25/26 Grand Mesa Ultras Grand Mesa 55 KM , 50 Miles
07/25/26 Pikes Peak Ultra Colorado Springs 50 KM , 50 Miles
08/01/26 Sheep Mountain Trail Runs Fairplay 50 KM , 50 Miles
08/15/26 Roxborough Ultras Littleton 50 KM , 50 Miles
08/29/26 Ouray 50 Mile Endurance Run Ouray 50 Miles
09/18/26 Run Rabbit Run Steamboat Springs 50 Miles , 100 Miles , 100 Miles
09/26/26 Sangre de Cristo Trail Festival Westcliffe 50 KM , 50 Miles , 100 KM , 101.3 Miles
09/26/26 Crested Butte Ultra Crested Butte 55 KM , 50 Miles
09/26/26 Red Feather Trail Jamboree Red Feather Lakes 50 KM , 50 Miles
10/03/26 The Bear Chase Lakewood 50 KM , 50 Miles , 100 KM
10/17/26 Indian Creek Trail Runs Sedalia 55 KM , 50 Miles
11/07/26 Kessel Run Ultra Fruita 50 KM , 40 Miles , 50 Miles
04/11/27 NoCo Urban Ultra and Relay Greeley 50 Miles , 100 Miles
06/05/27 Weld Your Mettle Running Festival Windsor 36 Hours , 50 KM , 50 Miles , 100 KM , 100 Miles

Past Events

Date Event City Distances
07/11/26 Silverheels Trail Runs Fairplay 60 KM , 50 Miles , 100 KM , 100 Miles , 100 Miles , 102 Miles , 106.5 Miles
07/11/26 Silver Rush 50 Leadville 50 Miles
06/20/26 San Juan Solstice Lake City 40 Miles , 50 Miles
06/20/26 Ring the Springs Colorado Springs 50 KM , 50 KM , 50 Miles , 100 KM , 100 Miles
06/06/26 Haul Ass Ultra Running Festival Erie 6 Hours , 9 Hours , 12 Hours , 50 KM , 50 Miles
06/06/26 Mace’s Hideout 100 Beulah 50 Miles , 100 Miles
05/30/26 North Fork 50 Mile/50K Pine 50 KM , 50 Miles
05/16/26 Ram Party Colorado Springs 29.4 Miles , 50 KM , 60 KM , 50 Miles , 50 Miles , 55 Miles
05/09/26 Quad Rock 50 Fort Collins 50 Miles
05/02/26 Collegiate Peaks Trail Run Buena Vista 50 Miles
04/25/26 Falcon 50 Colorado Springs 26.3 Miles , 50 Miles
06/21/25 Red, White, and Brew (12 Hour "Last Person Standing" Race) Windsor 12 Hours , 50 Miles
06/05/25 Vail Ultra Benefiting 50 For The Fallen Vail 50 Miles
09/21/24 Silver Creek Mountain Runs (Divide 100) Georgetown 50 KM , 50 Miles , 100 KM , 100 Miles
06/15/24 Cuchara Trail Runs La Veta 55 KM , 60 KM , 50 Miles , 55 Miles
05/20/23 Tava Canons Colorado Springs 50 Miles
10/08/22 Rough Canyon Trail Runs Grand Junction 50 KM , 50 Miles
07/30/22 Ole School 50/50 Steamboat Springs 50 KM , 50 Miles
06/04/22 Durango Skyline Trail Runs Durango 50 KM , 50 Miles
10/23/21 Fox Run Endurance Run Colorado Springs 12 Hours , 50 Miles
07/17/21 Kickers For Kids Fun Run Palmer Lake 50 KM , 50 Miles , 100 KM , 100 Miles
07/16/21 Mount Herman Adventure Run Palmer Lake 50 Miles , 100 Miles , 200 Miles
06/19/21 Happy Camper Endurance Run Westminster 50 Miles , 100 Miles , 150 Miles , 200 Miles
08/01/20 Dinosaur100 Trail Race Craig 50 Miles , 100 Miles
08/25/18 Devil Mountain Pagosa Springs 50 KM , 50 Miles
09/02/17 Hideaway Hundred Winter Park 50 KM , 50 Miles , 100 KM , 100 Miles
04/29/17 The Chatfield Ultra Race - C.U.R.E ultras Littleton 50 KM , 50 Miles , 100 KM
06/01/13 Run for Aurora Roxborough 50 KM , 50 Miles
03/11/00 Alfred E. Packer 50 Mile Run Littleton 50 Miles
08/05/88 Vail Valley 50 Mile Vail 50 Miles

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

Recent Results

Silverheels Trail Runs
Fairplay, CO - 52 finishers
60 KM
Devil's Gulch
Wenatchee, WA - 82 finishers
100 Miles | 50 Miles
Thumbs Up Summer Slam
Estes Park, CO - 0 finishers
12 Hours
Dances with Dirt - Devil's Lake
Baraboo, WI - 166 finishers
50 Miles | 50 KM
Carolina Reaper Challenge
Greenville, SC - 80 finishers
50 KM
Eastern Legend
Gilmer, TX - 5 finishers
50 KM
First Blaze Trail Race
Milton, ON - 70 finishers
50 KM
Spaulding Woods 50K
Northfield, NH - 52 finishers
50 KM
Kaslo Wild Ultra
Kaslo, BC - 52 finishers
52 KM
Get Your Butt Kicked @ Route 66
Eureka, MO - 37 finishers
6 Hours
View All Results