Colorado
Running in Boulder, Colorado
RaceRove lists 39 upcoming races in Boulder.
- Upcoming, date confirmed
- 39
- Active listings
- 66
Boulder races by distance
Upcoming races in Boulder
All 39 with a confirmed date, soonest first.
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Golden Harvest Half Marathon & 5k/10k - DenverWestminster, COHalf Marathon50m1 Mile5K +1 more ~10 runners
Dates come from each race's own listing. Always confirm on the organiser's site before you book travel.
Largest races in Boulder
By estimated field size across all distances at the event.
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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
Annual events awaiting their next date
These 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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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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BRR All-Comers Summer Track & Field Series #4Boulder, CO Usually held in July · next date not announced100m200m400m800m +1 more ~1,537 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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Runway 5K - Run for the AngelsBroomfield, CO Usually held in September · next date not announced5K ~1,000 runners
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American Heroes RunLongmont, CO Usually held in September · next date not announced100 Miler24 hrs6 hour open startVirtual - Any Distance
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Bark n' Bolt 1K with the Pints and Pups Dog ExpoArvada, CO Usually held in August · next date not announced1K
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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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BRR All-Comers Summer Track & Field Series #5Boulder, CO Usually held in August · next date not announced100m200m400m800m +1 more
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Lafayette Music Fest -5K - 10KLafayette, CO Usually held in October · next date not announced10K5K
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NEDNED Trail FestNederland, CO Usually held in September · next date not announced10K5KHalf Marathon
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RMRR Fall Marathon Training SeriesThornton, CO Usually held in August · next date not announced10 Miles20 Miles
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RMRR Fall Marathon Training Series #2Thornton, CO Usually held in September · next date not announced20K30K
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RMRR Fall Marathon Training Series #3Thornton, CO Usually held in September · next date not announced10 Miles20 Miles
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Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - ColoradoBoulder, CO Usually held in September · next date not announced5K
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Westminster Trail RacesWestminster, CO Usually held in August · next date not announced50K36K18K12K +1 more
Run clubs in Boulder
- No clubs listed yet
- RaceRove hasn't verified a local running club in Boulder yet — only real, checked clubs are ever listed.
Guides for Boulder
- Spectator Guide Boulderthon Spectator Guide Large race in Boulder. Base at the start/finish area.
- Spectator Guide Boulder Marathon Spectator Guide Large marathon in Boulder. Base at the start/finish area.
- Spectator Guide BolderBOULDER 10K Spectator Guide The BolderBOULDER finishes inside Folsom Field. Spectators should plan for the stadium, not a chase along the course.
Keep exploring
Running in Boulder, Colorado: common questions
- How many races are there in Boulder, Colorado?
- RaceRove currently lists 39 upcoming races in Boulder with a confirmed date.
- What is the biggest race in Boulder?
- By estimated field size, the largest race listed in Boulder is the BolderBOULDER 10K, with about 50,000 runners across all of its distances.
Search every race in Boulder
Filter by distance, month and course profile, then save races to a shortlist.