7 events in Boulder 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.
Boulder County
7 events in Boulder County-
Thu, Sep 04, 2025 at 1:00 AMSee full details
PLAYTRI - OFFICIAL TRIATHLON STORE OF IRONMAN
We bring our expert in-house mechanics and triathletes to IRONMAN® Events and offer the highest quality rentals, repair and maintenance services for you and your bike. From race ready tunes up to complete overhaul packages, we'll keep you riding and racing smooth on the road! We are a full-service shop available onsite to take care of additional services leading up to and on race day.
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Sun, May 03, 2026 at 8:00 AMSee full details
Join Rise Against Suicide's 17th annual Emerge 5K Walk/Run- a free, family-friendly walk/run supporting youth mental health and suicide prevention in our community.
This uplifting community gathering features a dedicated kids zone, an area for connection and reflection, inspiring speakers, local vendors, live music by Kutandara, and local food trucks. Along the course, butterfly signs will honor and remember the stories of those we love and those we’ve lost.
Emerge brings our community together in hope, remembrance, awareness, and collective strength - reminding every person that they are not alone.
WAYS TO PARTICIPATE
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Walk or Run
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Start a Team & Fundraise Together
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Honor a Story with a Butterfly Sign
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Become a Sponsor
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Donate to our Mission
EVENT SCHEDULE
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8:00 AM Registration & Arrival
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9:00 AM 5K Start
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11:00 AM Event Concludes
WHAT YOUR SUPPORT MEANS
Rise Against Suicide has funded more than 20,000 free therapy sessions and supported over 2,000 local youth at risk of suicide. Our goal is to raise $175,000 to continue to remove barriers and provide timely access to funded therapeutic support for youth 19 and under in our community.
BRING YOUR PEOPLE. BRING YOUR PURPOSE. TOGETHER WE RISE!
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Every Saturday at 9:00 AM
parkrun is such a simple concept: turn up every Saturday and volunteer, walk, jog or run 5k.
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Thu, Jul 16, 2026 at 4:00 PM
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Fri, Aug 07, 2026 at 6:00 PMSee full details
Founded in 1979, the Eldorado Run for the Cure is the longest operating charitable footrace in the State of Colorado. All proceeds from the annual four-mile run benefit the Colorado Cancer Foundation's life saving work, from funding oncology research at the University of Colorado's (CU) Division of Medical Oncology to aiding patients at the CU Hospital in Aurora, CO.
Each year, the run has developed and grown, and in 2023 a new course was introduced, routing participants along the scenic South Boulder Creek, which winds through the high cliff walls of historic Eldorado Canyon.