Colorado · 5K
5K Races in Colorado
Colorado currently has 129 upcoming 5Ks with a confirmed date listed in RaceRove. Denver, Colorado Springs, Centennial and Westminster have the largest concentration of events.
November (29), December (16) and October (14) are the busiest months on the calendar right now. Another 139 annual 5Ks are waiting for next year's date to be announced.
- Upcoming, date confirmed
- 129
- Active listings
- 268
- Cities with races
- 76
More ways to browse Colorado
Upcoming 5Ks in Colorado
All 129 with a confirmed date, soonest first.
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City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)Denver, CO5K10K ~2,743 runners
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Run Through Time Trail Marathon and Half MarathonSalida, COMarathonHalf Marathon10K5K +1 more ~3,133 runners
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Lucky Brew Race 5K, 10K, 15k & Half MarathonSeverance, COHalf Marathon5K10K9.3 Miles +1 more ~2,200 runners
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Elevate Kids Fun RunGrand Junction, CO10K Individual2.5K Individual5K IndividualCharity Bib +1 more
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Bound for Boston Marathon & Half Marathon - DenverDenver, COMarathonHalf Marathon10K5K ~150 runners
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Golden Harvest Half Marathon & 5k/10k - DenverWestminster, COHalf Marathon50m1 Mile5K +1 more ~10 runners
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Golden Harvest Half Marathon & 5k/10k - Colorado SpringsColorado Springs, COHalf Marathon50m1 Mile5K +1 more
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Colorado Springs Marathon, Half, 5K, and Kids KColorado Springs, COMarathonHalf Marathon10K5K +1 more ~2,500 runners
Dates come from each race's own listing. Always confirm on the organiser's site before you book travel.
Largest 5K events in Colorado
By estimated field size across all distances at the event.
When 5Ks happen in Colorado
- January
- 9 upcoming races
- February
- 10 upcoming races
- March
- 4 upcoming races
- April
- 9 upcoming races
- May
- 7 upcoming races
- June
- 5 upcoming races
- July
- 6 upcoming races
- August
- 12 upcoming races
- September
- 8 upcoming races
- October
- 14 upcoming races
- November
- 29 upcoming races
- December
- 16 upcoming races
Colorado cities with the most 5Ks
- Denver
- 21 upcoming races
- Colorado Springs
- 15 upcoming races
- Centennial
- 14 upcoming races
- Westminster
- 9 upcoming races
- Littleton
- 7 upcoming races
- Arvada
- 7 upcoming races
- Pueblo
- 4 upcoming races
- Thornton
- 4 upcoming races
Running in Colorado cities
Annual events awaiting their next date
These 5Ks 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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The Long View MarathonFort Collins, CO Usually held in October · next date not announcedMarathon10K5K ~6,084 runners
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Denver 5K On The RunwayDenver, CO Usually held in September · next date not announced5K Registration with Carpool Parking Pass5K Registration with Individual Parking PassYouth 5K Registration ~2,500 runners
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Parker Parks and Recreation So Long to Summer 5K/10KParker, CO Usually held in September · next date not announced5K10K ~2,500 runners
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Apex Foundation Trick or Trot 5K & Halloween HuntArvada, CO Usually held in October · next date not announced5K1 Mile ~2,100 runners
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Big Waves Family 5K run/walkWestminster, CO Usually held in October · next date not announced5K ~1,514 runners
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Run the Rocks at Red RocksMorrison, CO Usually held in October · next date not announced10K5K ~1,500 runners
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Runway 5K - Run for the AngelsBroomfield, CO Usually held in September · next date not announced5K ~1,000 runners
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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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Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile RunWindsor, CO Usually held in October · next date not announcedMarathonHalf Marathon10K5K +1 more ~660 runners
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Mesa County Search & Rescue 5KFruita, CO Usually held in September · next date not announced5K ~550 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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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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Your Story Isn't Over 5k/10k/Kids 1-MileLittleton, CO Usually held in October · next date not announced1 Mile10K5K ~300 runners
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Aspen Valley MarathonAspen, CO Usually held in July · next date not announcedMarathon10K5K ~222 runners
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Grand Valley Brew RunsGrand Junction, CO Usually held in September · next date not announced5K ~175 runners
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Staunton Rocks! Marathon and Half MarathonPine, CO Usually held in August · next date not announcedMarathonHalf Marathon10K5K ~112 runners
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The Bear ChaseLakewood, CO Usually held in October · next date not announced100K50 Mile50KHalf Marathon +2 more ~89 runners
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Mancos Cowboy Half Marathon, 5K, and Fun RunMancos, CO Usually held in October · next date not announcedHalf Marathon5K1 Mile ~74 runners
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14er Fest 14K & 5KBuena Vista, CO Usually held in September · next date not announced14K5K ~52 runners
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Bobcat Trail RacesColorado Springs, CO Usually held in October · next date not announced50K25K10K5K ~33 runners
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Snow Mountain RanchGranby, CO Usually held in September · next date not announced50K33KHalf Marathon10K +1 more ~33 runners
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9/11 Heroes Run - Denver, ColoradoDenver, CO Usually held in September · next date not announced5K1 Mile
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Bagel Run 5K/10K/13.1 DENVER/AURORACentennial, CO Usually held in October · next date not announcedHalf Marathon5K10K1 Mile
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Balanced Movement Yoga - Charity Fun 5K Walk/Run (Dog-Friendly)Evans, CO Usually held in September · next date not announced2K5K Walk/Run
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Be Ovary Aware 5k run 3k walkColorado Springs, CO Usually held in September · next date not announced3K Walk Adult3K Walk Youth5K Run Adult5K Run Youth +1 more
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Beulah Challenge and OverIt SeriesBeulah, CO Usually held in September · next date not announced10K5K32.4 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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Black Squirrel Half MarathonBellvue, CO Usually held in September · next date not announcedHalf Marathon5K
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Cancer League of Colorado Race 4 ResearchDenver, CO Usually held in August · next date not announced5K
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CASA Superhero RunGlenwood Springs, CO Usually held in September · next date not announced1 Mile Individual5K IndividualVirtual Participant
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Chile & Frijole Hot to Trot 5K & 10KPueblo, CO Usually held in September · next date not announced5K
5Ks in nearby states
Guides from the RaceRove blog
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 4 min read Diplo's Run Club 2026-27: Every City, Date and Course Diplo's Run Club is a 5K with a post-race concert. Every US date for 2026-27 (San Francisco, New York, Los Angeles, San Diego and Phoenix), start times and courses.
- 9 min read What's a Good 5K Time? Average Running Speed by Age and Sex Good 5K times by age and sex, from beginner to elite, and the average running speed in mph and km/h from the mile to the marathon, from the standards our free tool uses.
- Blog All guides Planning advice for finding, choosing and travelling to races.
5K Races in Colorado: common questions
- How many 5Ks are there in Colorado?
- RaceRove currently lists 129 upcoming 5Ks in Colorado with a confirmed date, plus 139 annual events whose next date hasn't been announced yet.
- How long is a 5K?
- A 5K is 3.1 miles (5 kilometres).
- Which Colorado cities have the most 5Ks?
- By upcoming events listed in RaceRove: Denver (21), Colorado Springs (15), Centennial (14), Westminster (9) and Littleton (7).
- When is 5K season in Colorado?
- Of the upcoming 5Ks listed, the busiest months are November (29), December (16) and October (14).
- What is the biggest 5K in Colorado?
- By estimated field size, the largest event with a 5K listed in Colorado is the Denver Colfax Marathon, with about 25,000 runners across all of its distances.
Search every 5K in Colorado
Filter by month, course profile and field size, save races to a shortlist and compare them side by side in the interactive search.