Photo: Vyacheslav Argenberg · CC BY 4.0 · Wikimedia CommonsTrail RunningUTMB World Series
Trail Running Festival Desert Rats by UTMB
Fruita, United States
April 9, 2027 to April 11, 2027Date confirmed
100 km48 km21 km9 km
ForestNature & Off-Road+4
USTrail Running · Ultra-Trails · Colorado · 19 Events · 54 Races
Ultra-Trails in Colorado
19 verified events with 54 individual races (6 confirmed dates) in Colorado complete with route maps and elevation profiles.
Events196 confirmed dates
Competitions54Races & courses
Distances9 - 160.9 kmCourse distance range
Max. Elevation Gain+10,120 m D+Course elevation profile
Selected Events
Featured Events & Highlights
Photo: Vyacheslav Argenberg · CC BY 4.0 · Wikimedia Commons
Photo: Larry D. Moore · CC BY 4.0 · Wikimedia CommonsTrail Running
Hardrock 100
Silverton, United States
July 9, 2027 to July 11, 2027Date confirmed
160.93 km
Multi-DayHigh Altitude+4
Photo: NPS · Public Domain · Wikimedia CommonsTrail RunningUTMB Index Races
Ouray 100 Mile Endurance Run
Ouray, United States
July 16, 2027 to July 18, 2027Date confirmed
160.93 km80.47 km
MountainHigh Altitude+3
Photo: Jonathan Beech · CC BY-SA 4.0 · Wikimedia CommonsTrail RunningUTMB Index Races
Leadville Trail 100 Run
Leadville, United States
August 21, 2027 to August 22, 2027Date confirmed
160.93 km
Nature & Off-RoadMountain+3
Photo: Larry D. Moore · CC BY 4.0 · Wikimedia CommonsTrail RunningUTMB Index Races
Silverheels 100
Como, United States
Date to be announcedDate TBA
160.93 km102 km80.47 km61 km+2
MountainNature & Off-Road+2
Photo: Larry D. Moore · CC BY 4.0 · Wikimedia CommonsTrail RunningUTMB Index Races
Sangre de Cristo Ultras
Westcliffe, United States
Date to be announcedDate TBA
160.93 km98.1 km80.47 km49.6 km+2
MountainHigh Altitude+2
Photo: NPS · Public Domain · Wikimedia CommonsTrail RunningUTMB Index Races
Sheep Mountain Trail Runs
Fairplay, United States
Date to be announcedDate TBA
80.47 km50 km21 km
High AltitudeMountain+1
Photo: NPS · Public Domain · Wikimedia CommonsTrail RunningUTMB Index Races
Silverton Ultra Dirty
Silverton, United States
Date to be announcedDate TBA
160.93 km95.8 km58.9 km
MountainNature & Off-Road+2
Dates & Schedule
Race Calendar
April 2027
| Date | Event | Location | Disciplines | Distances |
|---|---|---|---|---|
| Apr 9, 2027 - Apr 11, 2027 | Trail Running Festival Desert Rats by UTMB | Fruita, Colorado, US | Trail Running | 100 km48 km21 km9 km |
July 2027
| Date | Event | Location | Disciplines | Distances |
|---|---|---|---|---|
| Jul 9, 2027 - Jul 11, 2027 | Hardrock 100 | Silverton, Colorado, US | Trail Running | 160.93 km |
| Jul 16, 2027 - Jul 18, 2027 | Ouray 100 Mile Endurance Run | Ouray, Colorado, US | Trail Running | 160.93 km80.47 km |
August 2027
| Date | Event | Location | Disciplines | Distances |
|---|---|---|---|---|
| Aug 21, 2027 - Aug 22, 2027 | Leadville Trail 100 Run | Leadville, Colorado, US | Trail Running | 160.93 km |
Date to be announced
| Date | Event | Location | Disciplines | Distances |
|---|---|---|---|---|
| Date to be announced | Silverheels 100 | Como, Colorado, US | Trail Running | 160.93 km102 km80.47 km61 km |
| Date to be announced | Sangre de Cristo Ultras | Westcliffe, Colorado, US | Trail Running | 160.93 km98.1 km80.47 km49.6 km |
| Date to be announced | Sheep Mountain Trail Runs | Fairplay, Colorado, US | Trail Running | 80.47 km50 km21 km |
| Date to be announced | Silverton Ultra Dirty | Silverton, Colorado, US | Trail Running | 160.93 km95.8 km58.9 km |
| Date to be announced | Quad Rock | Fort Collins, Colorado, US | Trail Running | 80.47 km40.23 km |
| Date to be announced | North Fork 50K Trail Race | Pine Grove, Colorado, US | Trail Running | 80.47 km50 km |
| Date to be announced | Chase the Moon | Highlands Ranch, Colorado, US | Trail Running | 160.93 km50 km |
| Date to be announced | Leadville Silver Rush Trail Run | Leadville, Colorado, US | Trail Running | 80.47 km24 km |
Events by Month
Overview & Route Character
Ultra-trails span from 50 km to over 160 km across mountain ranges and natural parks, requiring mandatory gear, night running skills, and self-sufficiency. Off-road running on singletrack, forest paths, and alpine ridges, spanning short discovery trails to high-mountain ultra-trails. In this Ultra-Trails in Colorado directory, RunningCompass curates 19 events comprising 54 individual races, including 6 events with confirmed upcoming dates.
Courses span distances ranging from 9 km to 160.9 km and elevation gains up to +10,120 m. Key host locations include Fruita, Silverton, Ouray, Leadville. Notable events in this selection include Trail Running Festival Desert Rats by UTMB, Hardrock 100, Ouray 100 Mile Endurance Run.
Questions & Answers
Frequently asked questions (FAQ)
How many events and races are listed under Ultra-Trails in Colorado?
This overview currently includes 19 verified events featuring 54 individual races. Of these, 6 events have confirmed upcoming dates on the calendar, while 13 events await next edition date confirmation from the organizer.
What race distances and elevation profiles are included in Ultra-Trails in Colorado?
Races in this selection span distances of 9 km to 160.9 km. The most demanding courses reach up to +10,120 m of positive elevation gain. Featured disciplines include Trail Running.
Which host cities and flagship events stand out in Ultra-Trails in Colorado?
Top host locations include Fruita, Silverton, Ouray, Leadville, Como. Representative events in the catalog include Trail Running Festival Desert Rats by UTMB, Hardrock 100, Ouray 100 Mile Endurance Run, Leadville Trail 100 Run. Ultra-trails span from 50 km to over 160 km across mountain ranges and natural parks, requiring mandatory gear, night running skills, and self-sufficiency.
How can I inspect route maps, elevation charts, and date filters for Ultra-Trails in Colorado?
Every event profile provides an interactive route map, a detailed elevation chart across all 54 races, and a GPX track download. You can also switch directly to the interactive map explorer to filter by date range and distance.