Recovery Run of the Rockies 5K

Fossil Creek Park Lemay Avenue, Fort Collins, CO, United States

Lace up your running shoes for the Second Annual Recovery Run of the Rockies 5K! This uplifting charity run promotes physical wellness and supports Lighthouse's addiction recovery services, with all […]

$30 – $40

Denver Broncos Fit 7K

Empower Field at Mile High 1701 Bryant St., Denver, CO, United States

All members of Broncos Country, walkers and runners alike, are invited to join the Denver Broncos for the 12th annual Broncos Fit 7K over Labor Day Weekend. Participants will start […]

Orangetheory 5K

Memorial Park - Colorado Springs 1605 E Pikes Peak Ave, Colorado Springs, CO, United States

Join us for the 3rd annual Orangetheory 5k at Labor Day Lift Off on Sunday, September 1, 2024. Starting from the IAFF Fallen Firefighters Memorial (northwest corner of Memorial Park), […]

10K (and 5K) @ 10,000 Feet

Rabbit Ears Pass Steamboat Springs, CO, United States

This is a challenging trail run with beautiful terrain and breathtaking scenery. The 10K race begins at 10,000 ft at the summit of Rabbit Ears Pass. The course begins by […]

Wine Run 5K

The Winery At Holy Cross Abbey 3011 US-50, Canyon City, CO, United States

Like Running or Walking?  Love Wine?  This race is for you! Join us on Sunday, September 1, 2024 at 10:00am for an exciting annual event that features the amazing scenery […]

$35

Oak Creek No Fun Run

Oak Creek Town Hall 123 Nancy Crawford Blvd, Oak Creek, CO, United States

The Running Series is excited to have the Oak Creek No Fun Run on our schedule again! Please join us in remembering long-time Running Series competitor Larry Brooks, a former […]

Roost Rebellion Relays

Washington Park - Denver 701 S Franklin St, Denver, CO, United States

Welcome to the Roost Rebellion Relays! Assemble your fastest 4 x 1 mile relay team to race in Washington Park. Each team needs to be co-ed with at least 2 […]

American Heroes Run

Rogers Grove Park 220 North 95th Street, Longmont, CO, United States

The tragic events of 9/11/01 changed our nation forever. Let us not forget our proud history and those who fight everyday to keep us free. Please join us for this […]

Flaming Foliage Relay

Citizens Park 17th Ave & Miner St, Idaho Springs, CO, United States

Flaming Foliage is a 165 mile overnight team relay race adventure with single track trails, from Idaho Springs to beautiful Buena Vista, over Guanella, Georgia & Fremont Passes. Since 2013, […]

Littlefoot Sprint Triathlon

Bear Creek Lake Park 15600 W Morrison Rd, Lakewood, CO, United States

Enjoy a fun late season tri at beautiful Bear Creek Lake Park in a land before time. Set at the base of the foothills, the Littlefoot Triathlon starts off with […]

Please click here to submit your event for FREE to our online calendar.
We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.