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Trail races in Colorado

2026 and 2027 race calendar. 27 upcoming, updated daily.

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Map of races in Colorado
RunningTrailCyclingTriathlonObstacleGroup of races
Denver36Centennial30Colorado Springs24Arvada15Fort Collins11Westminster10Loveland7Golden6Grand Junction6Boulder5Estes Park5Littleton5Durango4Glenwood Springs4Louisville4Pueblo4Steamboat Springs4Windsor4Alamosa3Aurora3Buena Vista3Crested Butte3Englewood3Longmont3
All 77 cities and towns
Denver36Centennial30Colorado Springs24Arvada15Fort Collins11Westminster10Loveland7Golden6Grand Junction6Boulder5Estes Park5Littleton5Durango4Glenwood Springs4Louisville4Pueblo4Steamboat Springs4Windsor4Alamosa3Aurora3Buena Vista3Crested Butte3Englewood3Longmont3Salida3Thornton3Alma2Bailey2Erie2Fountain2Greeley2Highlands Ranch2Idaho Springs2Leadville2Lyons2Mancos2Palmer Lake2Parker2Westcliffe2Woodland Park2Aspen1Bayfield1Bellvue1Berthoud1Broomfield1Castle Rock1Como1Divide1Eaton1Eldorado Springs1Evergreen1Fairplay1Fraser1Fruita1Georgetown1Granby1Greenwood Village1Hesperus1Johnstown1Kremmling1Larkspur1Loma1Lone Tree1Manitou Springs1Montrose1Morrison1Pagosa Springs1Palisade1Pine1Red Feather Lakes1Severance1Silverton1South Fork1Superior1Telluride1Wellington1Winter Park1
27 upcoming
Sport
AllRunning225Trail27Cycling7Triathlon7Obstacle1Other6
Distance
Any5K19210K96Half marathon93Marathon750K6Ultra12
October 2026
November 2026

Kessel Run Ultra

Fruita, Colorado, United States
Trail50KUltra20 miles10 miles
December 2026
February 2027

Stories Trail Runs

Colorado Springs, Colorado, United States · Feb 6 to Feb 7, 2027
TrailHalf marathon6.7 miles19.6 miles
March 2027
April 2027
May 2027

Endure Trail Runs

Divide, Colorado, United States
Trail6.81 miles14.12 miles26.53 miles

Farish Trail Race

Woodland Park, Colorado, United States
Trail5K10KHalf marathon
June 2027
July 2027

Hardrock 100

Silverton, Colorado, United States · Jul 9 to Jul 11, 2027
TrailUltra

Silverheels Trail Runs

Como, Colorado, United States · Jul 9 to Jul 10, 2027
TrailUltra10.8 miles19.1 miles
August 2027
September 2027
October 2027

Chili Chase

Durango, Colorado, United States
Trail6.8 miles
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