Ultra Marathon Races in Colorado
Browse 46 ultra marathon trail running and hiking routes in Colorado. Distance range: 26.3 mi to 177.5 mi. Elevation gain: 77 ft to 42,884 ft. Each route includes terrain analysis, elevation profiles, and pacing recommendations.
Key Takeaways
Total Routes
46
Races / Routes
3 / 43
Distance Range
26.3 mi - 177.5 mi
Elevation Range
77 ft - 42,884 ft
Surface Type
100% Trail
| Route Name | Location | Distance | Elevation Gain | Type | Race Date |
|---|---|---|---|---|---|
| Hardrock 100 | San Juan County, Colorado | 98.9 mi | 31,608 ft | race | Jul 10, 2026 |
| Pikes Peak Marathon | El Paso County, Colorado | 26.3 mi | 7,910 ft | race | — |
| Leadville Trail 100 | BLM - Royal Gorge Field Office, Colorado | 105.6 mi | 11,018 ft | race | — |
| Douglas County East to West Trail | Douglas County, Colorado | 26.6 mi | 1,509 ft | route | — |
| Trans-RMNP Marathon | Larimer County, Colorado | 27.0 mi | 4,584 ft | route | — |
| Colorado Trail Seg. 9 Tennessee Pass to Hagerman Pass Road | San Isabel National Forest, Colorado | 27.7 mi | 3,760 ft | route | — |
| Columbine | Roosevelt National Forest, Colorado | 27.8 mi | 2,432 ft | route | — |
| Maroon Bells 4 Passes Loop (CO) | Pitkin County, Colorado | 28.0 mi | 8,048 ft | route | — |
| Sand Canyon, All the Trails (CO) | Montezuma County, Colorado | 28.6 mi | 3,217 ft | route | — |
| Manitou Missing Link Loop (CO) | El Paso County, Colorado | 29.3 mi | 5,968 ft | route | — |
| Saint Louis Ridge Traverse | Grand County, Colorado | 29.6 mi | 8,064 ft | route | — |
| Wild Basin Traverse (CO) | Boulder County, Colorado | 29.7 mi | 13,493 ft | route | — |
| Historic Gold Camp Road (CO) | Teller County, Colorado | 33.7 mi | 1,257 ft | route | — |
| Palisade Plunge (CO) | Mesa County, Colorado | 34.1 mi | 933 ft | route | — |
| Indian Ridge Traverse | Clear Creek County, Colorado | 34.1 mi | 9,534 ft | route | — |
| LA Freeway (CO) | Grand County, Colorado | 35.8 mi | 18,222 ft | route | — |
| Mee & Knowles Canyons (CO) | Mesa County, Colorado | 36.0 mi | 3,786 ft | route | — |
| Mee Canyon > Knowles Loop | Black Ridge Canyons Wilderness, Colorado | 36.0 mi | 3,661 ft | route | — |
| McPhee Reservoir Circumnavigation (CO) | Montezuma County, Colorado | 36.2 mi | 4,469 ft | route | — |
| Uncompahgre & Wetterhorn (CO) | Hinsdale County, Colorado | 38.4 mi | 11,178 ft | route | — |
| Big Dominguez and Little Dominguez Canyon Loop (CO) | Mesa County, Colorado | 38.8 mi | 4,427 ft | route | — |
| Colorado National Monument 10 Canyon Traverse (CO) | Mesa County, Colorado | 40.2 mi | 6,659 ft | route | — |
| Mt Morrison 24 Hours of Laps | Jefferson County, Colorado | 41.3 mi | 22,113 ft | route | — |
| Rio Grande Trail (CO) | Pitkin County, Colorado | 41.9 mi | 77 ft | route | — |
| Berthoud Ridge Traverse | Clear Creek County, Colorado | 41.9 mi | 14,469 ft | route | — |
| Golden - Mt Blue Sky (CO) | Jefferson County, Colorado | 42.6 mi | 12,346 ft | route | — |
| Pikes Peak, Mt Rosa, Almagre Mtn (CO) | El Paso County, Colorado | 43.9 mi | 11,368 ft | route | — |
| Northern Sangre de Cristo Loop | San Isabel National Forest, Colorado | 45.6 mi | 17,538 ft | route | — |
| Northern Sangres Traverse Loop | Fremont County, Colorado | 45.6 mi | 17,538 ft | route | — |
| Gore Range Trail (CO) | Summit County, Colorado | 46.7 mi | 10,278 ft | route | — |
| Rocky Mountain Grand Loop (CO) | Grand County, Colorado | 48.7 mi | 11,650 ft | route | — |
| Bears Ears Trail #1144 | Routt County, Colorado | 52.7 mi | 9,106 ft | route | — |
| Elks Traverse (CO) | Pitkin County, Colorado | 52.9 mi | 22,545 ft | route | — |
| Rampart Range Road (CO) | El Paso County, Colorado | 56.8 mi | 4,940 ft | route | — |
| Centennial Elks Traverse (CO) | Pitkin County, Colorado | 60.4 mi | 37,586 ft | route | — |
| Durango 7 Summits (CO) | La Plata County, Colorado | 61.4 mi | 11,637 ft | route | — |
| Lost Creek Wilderness Loops (CO) | Park County, Colorado | 62.3 mi | 12,631 ft | route | — |
| High Line Canal Trail (CO) | Arapahoe County, Colorado | 66.4 mi | 320 ft | route | — |
| Ring The Peak (CO) | El Paso County, Colorado | 68.7 mi | 11,064 ft | route | — |
| Milner Pass - Berthoud Pass on the Continental Divide (CO) | Grand County, Colorado | 80.9 mi | 28,073 ft | route | — |
| Longs Peak Picnic (CO) | Boulder County, Colorado | 88.1 mi | 11,492 ft | route | — |
| Sangre de Cristo Traverse (CO) | Saguache County, Colorado | 103.2 mi | 42,884 ft | route | — |
| Paradox Trail (CO) | Montrose County, Colorado | 104.8 mi | 16,863 ft | route | — |
| Yampa Valley Trail | Moffat County, Colorado | 111.1 mi | 11,838 ft | route | — |
| Tabeguache Trail | Mesa County, Colorado | 146.7 mi | 17,604 ft | route | — |
| Denver Orbital Trail (CO) | Denver, Colorado | 177.5 mi | 11,885 ft | route | — |
Frequently Asked Questions
How many trail races are in Colorado?
There are 3 organized races and 43 self-supported routes available in Colorado.
What is a Ultra Marathon race?
A Ultra Marathon race is approximately 26.2 to 100+ miles in distance.
What is the average elevation gain in Colorado?
The average elevation gain is 11,600 feet, with routes ranging from 77 to 42,884 feet.
Can these ultra marathon routes in Colorado be used for hiking?
Yes. 100% of these routes are on trail surfaces, making them suitable for both trail running and hiking. The terrain analysis and elevation profiles help hikers plan their adventures just as effectively as runners.
Are Ultra Marathon races beginner-friendly?
Ultra Marathon race difficulty varies widely. Use the elevation gain and terrain analysis to assess each route. Races with lower elevation gain relative to distance and higher runnable percentages tend to be more beginner-accessible.
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