Events
Race Directors

Ultra Running Events near Denver, Colorado

Date Event City Distances Distance from Denver
06/27/26 Chase the Moon Endurance Run Highlands Ranch 6 Hours , 12 Hours , 50 KM 13 miles
06/27/26 Estes Park's Backyard Ultra Estes Park Backyard 52 miles
07/10/26 Silverheels Trail Runs Fairplay 60 KM , 50 Miles , 100 KM , 106.5 Miles 56 miles
07/11/26 Silver Rush 50 Leadville 50 Miles 77 miles
07/18/26 Thumbs Up Summer Slam Estes Park 12 Hours 52 miles
07/24/26 Never Summer Gould 60 KM , 100 KM 75 miles
07/25/26 Pikes Peak Ultra Colorado Springs 50 KM , 50 Miles 64 miles
07/27/26 The Summit 200 Frisco 200 Miles 61 miles
08/01/26 Sheep Mountain Trail Runs Fairplay 50 KM , 50 Miles 65 miles
08/01/26 Winter Park 50K Winter Park 50 KM 42 miles
08/15/26 Roxborough Ultras Littleton 50 KM , 50 Miles 9 miles
08/15/26 Westminster Trail Race Westminster 50 KM 10 miles
08/22/26 Leadville Trail Leadville 100 Miles 81 miles
08/29/26 Rock Hawk Castle Rock 50 KM 25 miles
09/03/26 Front Range Ultra Dayze Loveland 12 Hours , 24 Hours , 48 Hours , 100 Hours , 50 KM , 100 Miles , 200 Miles 47 miles
09/05/26 Raising the Barr Brighton 6 Hours , 12 Hours 19 miles
09/11/26 American Heroes Run Longmont 6 Hours , 9 Hours , 24 Hours , 100 Miles 31 miles
09/12/26 Devil on the Divide 50K Empire 50 KM 36 miles
09/12/26 Snow Mountain Ranch Granby 50 KM 57 miles
09/26/26 Red Feather Trail Jamboree Red Feather Lakes 50 KM , 50 Miles 74 miles
09/26/26 West Line Winder Buena Vista 50 KM 87 miles
09/26/26 24 Hours of Palmer Lake Palmer Lake 24 Hours 44 miles
09/27/26 Estes Epic Estes Park 50 KM 52 miles
09/27/26 Sawatch Ascent Nathrop 50 KM 90 miles
10/03/26 The Bear Chase Lakewood 50 KM , 50 Miles , 100 KM 5 miles
10/03/26 Castle Rock Trail Festival Castle Rock 50 KM 26 miles
10/03/26 Above the Clouds Ultra Woodland Park 50 KM 52 miles
10/10/26 Suffer Better Fall Trail Run Pine 50 KM 29 miles
10/17/26 Indian Creek Trail Runs Sedalia 55 KM , 50 Miles 25 miles
10/17/26 Bobcat Trail Races Colorado Springs 50 KM 61 miles
10/24/26 Bridge Burner Ultra Canon City 50 KM , 35 Miles 90 miles
11/07/26 Colorado 24 Hour Run Fort Collins 6 Hours , 12 Hours , 24 Hours 53 miles
11/21/26 Colorado Cold Rush Ultra Colorado Springs 50 KM 64 miles
12/05/26 Sawmill Trail Runs Pine 50 KM 26 miles
02/06/27 Stories Trail Runs Colorado Springs 6 Hours , 15 Hours 71 miles
04/11/27 NoCo Urban Ultra and Relay Greeley 50 Miles , 100 Miles 50 miles
04/17/27 Rattler Trail Race Colorado Springs 50 KM 61 miles
04/24/27 Cheyenne Mountain Trail Race Colorado Spring 50 KM 71 miles
05/01/27 Greenland Trail Races Larkspur 50 KM 39 miles
05/08/27 Valkyrie Trail Race Colorado Springs 50 KM 65 miles
05/15/27 Endure Trail Runs Divide 12 Hours 56 miles
06/05/27 Weld Your Mettle Running Festival Windsor 36 Hours , 50 KM , 50 Miles , 100 KM , 100 Miles 51 miles
06/12/27 Summits Trail Runs Granby 14 Hours , 27.8 Miles , 50 KM 57 miles

Weekly Newsletter

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

Recent Results

Rainbow Trail Run
Alliston, ON - 11 finishers
60 KM | 48 KM
North Sun Ultra
Edmonton, AB - 96 finishers
50 KM
Kettle Moraine 100 Endurance Runs
La Grange, WI - 346 finishers
100 Miles | 100 KM | 38 Miles | 50 KM
Summer Trailfest Ultra
Laingsburg, MI - 117 finishers
50 Miles | 50 KM | 50 KM | 50 KM
Cotter Bridge Ultra
Cotter, AR - 24 finishers
50 Miles
Ansonia Six Hour Trail Run
Ansonia, CT - 12 finishers
6 Hours
Boom or Bust Ultra Trail Run
Pioche, NV - 2 finishers
30 Miles
Yellowbrick Backyard Ultra
Peoria, IL - 57 finishers
Backyard
Sinks Canyon Trail Races
Lander, WY - 113 finishers
50 KM
Cool Moon Trail Runs
Cool, CA - 43 finishers
100 KM | 50 Miles
View All Results