Colorado · Trail
Trail Races in Colorado
Colorado currently has 21 upcoming trail races with a confirmed date listed in RaceRove. Colorado Springs, Leadville, Pine and Salida have the most.
Among them, 8 offer a 5K, 6 a 10K, 5 a half marathon, 3 a marathon and 6 an ultra distance (50K and beyond, or a timed race). An event with several distances counts once for each.
May (4), June (3) and August (3) are the busiest months for trail races here. Another 23 annual trail races are waiting for next year's date to be announced.
This page is the same for everyone, so it can't know where you are. Open the race search from here, which starts with Colorado's trail races, and set its Near filter to your city to keep only the ones around you.
- Upcoming, date confirmed
- 21
- Active listings
- 44
- Cities with trail races
- 32
Upcoming trail races in Colorado
All 21 with a confirmed date, soonest first.
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Run Through Time Trail Marathon and Half MarathonSalida, COMarathonHalf Marathon10K5K +1 more ~3,133 runners
Dates come from each race's own listing. Always confirm on the organiser's site before you book travel.
Largest trail races in Colorado
By estimated field size across all distances at the event.
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Run Through Time Trail Marathon and Half MarathonSalida, COMarathonHalf Marathon10K5K +1 more ~3,133 runners
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Emerald Mountain Trail RunSteamboat Springs, CO Usually held in October · next date not announced12K4 Miles ~2,250 runners
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Mountain Marmot Trail RunDurango, CO Usually held in September · next date not announced12 Miles ~1,911 runners
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Blue Sky Trail Marathon & Half MarathonFort Collins, CO Usually held in October · next date not announcedMarathonHalf Marathon26.7 Miles13.4 Miles ~1,200 runners
Trail ultramarathons in Colorado
Trail races with a distance of 50K or more, a fixed-time format, or billed as an ultra (the race search's Ultra filter): confirmed dates first, soonest first.
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Suffer Better 10th Annual Fall Trail RunsPine, CO Usually held in October · next date not announced50K25K5K ~924 runners
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Red Feather Trail JamboreeRed Feather Lakes, CO Usually held in September · next date not announced50 Miler50K5K94 Miles ~500 runners
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Sage Burner Trail RaceGunnison, CO Usually held in October · next date not announced50K28K15K ~250 runners
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Bobcat Trail RacesColorado Springs, CO Usually held in October · next date not announced50K25K10K5K ~33 runners
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Continental Divide Trail RunSteamboat Springs, CO Usually held in August · next date not announced5 Miles16 Miles50K
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Westminster Trail RacesWestminster, CO Usually held in August · next date not announced50K36K18K12K +1 more
When trail races happen in Colorado
- February
- 2 upcoming trail races
- March
- 1 upcoming trail race
- April
- 2 upcoming trail races
- May
- 4 upcoming trail races
- June
- 3 upcoming trail races
- July
- 1 upcoming trail race
- August
- 3 upcoming trail races
- September
- 1 upcoming trail race
- October
- 1 upcoming trail race
- November
- 2 upcoming trail races
- December
- 1 upcoming trail race
Colorado cities with the most trail races
- Colorado Springs
- 7 upcoming trail races
- Leadville
- 2 upcoming trail races
- Pine
- 1 upcoming trail race
- Salida
- 1 upcoming trail race
- Divide
- 1 upcoming trail race
- Fairplay
- 1 upcoming trail race
- Frisco
- 1 upcoming trail race
- Granby
- 1 upcoming trail race
Annual trail races awaiting their next date
These trail races are held every year, but the next date isn't in the listing yet. The month shown is when each is usually held.
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Emerald Mountain Trail RunSteamboat Springs, CO Usually held in October · next date not announced12K4 Miles ~2,250 runners
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Mountain Marmot Trail RunDurango, CO Usually held in September · next date not announced12 Miles ~1,911 runners
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Blue Sky Trail Marathon & Half MarathonFort Collins, CO Usually held in October · next date not announcedMarathonHalf Marathon26.7 Miles13.4 Miles ~1,200 runners
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Suffer Better 10th Annual Fall Trail RunsPine, CO Usually held in October · next date not announced50K25K5K ~924 runners
-
Red Feather Trail JamboreeRed Feather Lakes, CO Usually held in September · next date not announced50 Miler50K5K94 Miles ~500 runners
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Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half MarathonCanon City, CO Usually held in October · next date not announcedHalf Marathon5K8 Miles ~400 runners
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Sage Burner Trail RaceGunnison, CO Usually held in October · next date not announced50K28K15K ~250 runners
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Bobcat Trail RacesColorado Springs, CO Usually held in October · next date not announced50K25K10K5K ~33 runners
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Beas Knees Citizens' Race and National High School Trail ChampionshipsSalida, CO Usually held in July · next date not announced5.4 Miles
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Beware the Bear Trail RacesLakewood, CO Usually held in October · next date not announced5+15 Double15k5kKids 1k
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Break of Dawn North Table Trail RaceGolden, CO Usually held in September · next date not announced10 Mile5 Mile
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Continental Divide Trail RunSteamboat Springs, CO Usually held in August · next date not announced5 Miles16 Miles50K
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Deep Creek Trail Half MarathonTelluride, CO Usually held in September · next date not announced1/2 Marathon
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Eltuck Valley 12K - Lory Summer Trail SeriesBellvue, CO Usually held in August · next date not announced12K
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Eltuck Valley 5K - Lory Summer Trail SeriesFort Collins, CO Usually held in August · next date not announced5000m
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HRCA Wildcat Mountain Trail RacesLittleton, CO Usually held in October · next date not announced10 Miles10K
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NEDNED Trail FestNederland, CO Usually held in September · next date not announced10K5KHalf Marathon
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RexRun For PAWSitivity 2026 Trail Run/WalkAurora, CO Usually held in August · next date not announced5K1 Mile
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Trail Sisters Women's Half Marathon & 10kBuena Vista, CO Usually held in September · next date not announcedHalf Marathon5K10K
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West Elk ChallengeCrawford, CO Usually held in October · next date not announced30K OptionTrail Marathon
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Westminster Trail RacesWestminster, CO Usually held in August · next date not announced50K36K18K12K +1 more
More ways to browse Colorado
Trail races in nearby states
How RaceRove picks trail races
A race is on these pages when its name, its list of distances or its listing's notes say "trail". That is the rule the Trail filter in RaceRove's race search uses, so a race is a trail race on both or on neither. A race on dirt roads or mountain paths that doesn't call itself a trail race isn't counted, and neither is one whose only mention of a trail is in its description.
Trail races come in every length, from a few miles in a city park to 100 miles in the mountains. Off the road, the same distance usually takes longer: read each race's course description for its climbing, its footing and any cut-off times before you register, and plan your pace from those rather than from a road time.
Mud runs and obstacle races aren't a category of their own in RaceRove; one is on these pages only when its listing says trail. To get ready for one, the obstacle course race training guide covers Spartan, Tough Mudder and mud-run preparation. Thinking about a first ultramarathon? The ultramarathon and trail training plans run from 50K to 100 miles, and the Ultra Classics list gathers the best-known ultras.
Guides from the RaceRove blog
- 9 min read Obstacle Course Race Training: How to Prepare for Spartan Race, Tough Mudder and Mud Runs How OCR training differs from a running plan: building grip strength, upper-body pulling power and running fitness for Spartan Race, Tough Mudder and local mud runs.
- 9 min read Ultramarathon and Trail Training Plans: 50K to 100 Miles How ultra training differs from marathon training, phase-by-phase 50K and 100-mile plans, gear and fueling basics, and how to pick your first ultramarathon.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Trail Races in Colorado: common questions
- How many trail races are there in Colorado?
- RaceRove currently lists 21 upcoming trail races in Colorado with a confirmed date, plus 23 annual trail races whose next date hasn't been announced yet.
- What counts as a trail race on RaceRove?
- A race whose name, list of distances or listing notes say "trail": the same rule as the Trail filter in RaceRove's race search, so a race is a trail race on both or on neither. A race whose only mention of a trail is in its description isn't counted, and neither is one on dirt roads or mountain paths that doesn't call itself a trail race.
- Which Colorado cities have the most trail races?
- By upcoming trail races listed in RaceRove: Colorado Springs (7), Leadville (2), Pine (1), Salida (1) and Divide (1).
- When is trail race season in Colorado?
- Of the upcoming trail races listed, the busiest months are May (4), June (3) and August (3).
- What is the biggest trail race in Colorado?
- By estimated field size, the largest trail race listed in Colorado is the Run Through Time Trail Marathon and Half Marathon, with about 3,133 runners across all of its distances.
- Are there trail ultramarathons in Colorado?
- Yes: 6 upcoming trail races in Colorado with a distance of 50K or more, a fixed-time format, or billed as an ultra (the race search's Ultra filter).
- How do I find trail runs near me in Colorado?
- Open the race search from this page: it starts with Colorado's trail races. Set its Near filter to your city and how far you'll travel, and only the ones around you are left. This page can't see where you are.
Search every trail race in Colorado
The race search with this state and its Trail filter on: set Near to your city and a radius, then narrow by month, distance and field size.