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

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 […]

Black Squirrel Half Marathon

Lory State Park 708 Lodgepole Dr, Bellvue, CO, United States

The Black Squirrel Trail Half Marathon takes place on the wonderful trails of Lory State Park to the northwest of Fort Collins, CO. The trail half marathon course offers a […]

$75 – $99

Sloan’s Lake Search Party Marathon

Sloan's Lake Park 1700 Utica Street, Denver, CO, United States

THE SUMMARY Did you know that the loop around Sloan's Lake in Denver Colorado is almost perfectly 2.62 miles around? Join us as we go around the lake every hour on the […]

Devil on the Divide 50K/22K

Minton Park Cemetery Rd, Empire, CO, United States

We are pleased to present one of the most beautiful and challenging trail racing events in the state of Colorado with breathtaking (literally and figuratively) views of Clear Creek County […]

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.