2 events in Adams County, Colorado

From big races to Saturday morning group runs—find running, cycling, triathlon, and swimming events and connect with the local endurance sports community.

• Blue Heron Half & 5K [rmrr.org] [Register at runsignup.com]
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  Sun, Apr 26, 2026 at 8:00 AM

  Description

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  Come run a PR in Adams County. Both races start/finish at Riverdale Regional Park. They run along gently flowing waters of the S. Platte, with wildlife, wildlife sculptures, and mountain views.

  All...

  Come run a PR in Adams County. Both races start/finish at Riverdale Regional Park. They run along gently flowing waters of the S. Platte, with wildlife, wildlife sculptures, and mountain views.

  All racers will get a 50% discount, 1-yr membership, in the Rocky Mountain Road Runners (RMRR) club. Membership includes:

  • Free monthly Trophy Series club race. The TS races use staggered starts, slow to fast, where everyone has a chance to win.

  • Discounts at RMRRs fall Marathon Training Series races.

  • Discounts at local running stores.

  If you're RMRR membership expired, please rejoin the club first. RMRR members get a discount to the race - taken automatically at checkout.

  5k 13.1 Miles Run

  Campground Lane, Adams County, Colorado, 80601, United States
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• Raising the Barr [runsignup.com]
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  Sat, Sep 05, 2026 at 7:00 AM

  Description

  Introducing the Raising the Barr Ultra Race. Try to finish as many 10 mile loops around the lake in the first 4 or 10 hours and then switch to 1 mile loops for the last few hours of your race.

  Registration includes bib, t-shirt, and post-race meal.

  Run Ultra

  13401 Picadilly Rd, Adams County, Colorado, 80603, United States
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