Colorado Race Calendar — All Events
(As of Thursday, January 28, 2021) Print Version
For event listing corrections, please contact us.

To all participants and volunteers for upcoming events: Due to the rapidly evolving situation related to COVID-19, date changes and cancellations are being announced throughout the country. Please check directly with the race's website for the most up-to-date and reliable information regarding the event's status.
Date | Event | Location |
Sat., 2/6/21 9:00 AM | All-Out Mardi Crawl 1M, 5K, 10K, and Half Marathon Half Marathon Run, 10K Run, 5K Run, 1 Mile Run | Arvada, CO |
Sun., 2/28/21 9:30 AM | Highlands Ranch 5k/10k 10K Run, 5K Run ![]() | Highlands Heritage Regional Park Highlands Ranch, CO |
Sun., 3/7/21 | Owl Creek Chase Run ![]() | Aspen, CO |
Tue., 3/9/21 | Dust Bowl Series - Day 5 (CO) Run ![]() | Willow Creek Park Lamar, CO |
Sun., 3/21/21 9:00 AM | All-Out Spring Fever 1M, 5K, 10K, and Half Marathon Half Marathon Run, 10K Run, 5K Run, 1 Mile Run | North Area Athletic Complex Golden, CO |
Sun., 3/28/21 9:30 AM | Central Park 5k 5K Run ![]() | Central Park, Stapleton Denver, CO |
Sat., 4/3/21 | DEKA Strong Run ![]() | Colfax STRONG Denver, CO |
Sun., 4/11/21 | Koala Bottle CMSP 24K/12K/5K Run ![]() | Cheyenne Mountain State Park Colorado Springs, CO |
Sat., 4/17/21 7:30 AM | All-Out Beat the Heat 1M, 5K, 10K, Half and Full Marathon Marathon Run, Half Marathon Run, 10K Run, 5K Run | Church Ranch Office Park Westminster, CO |
Sat., 5/1/21 | Panda Waddle 5k Run ![]() | Longs Family Park Grand Junction, CO |
Sat., 6/5/21 | Bergen Peak Half Marathon Trail Race Run ![]() | Buchanan Park Recreation Center Evergreen, CO |
Sun., 6/6/21 | Boulder Rez Half Marathon Run ![]() | Boulder Reservoir Boulder, CO |
Sat., 6/26/21 7:00 AM | All-Out Summer Breeze 1M, 5K, 10K & Half Marathon Half Marathon Run, 10K Run, 5K Run, 1 Mile Run | Stenger Soccer Complex Arvada, CO |
Sat., 7/17/21 7:00 AM | All-Out Dog Days 1M, 5K, 10K, and Half Marathon Half Marathon Run, 10K Run, 5K Run, 1 Mile Run | Westminster City Park Westminster, CO |
Sat., 8/21/21 7:00 AM | All-Out Runapalooza 1M, 5K, 10K, and Half Marathon Half Marathon Run, 10K Run, 5K Run, 1 Mile Run | Apex Center Arvada, CO |
Sat., 9/18/21 7:30 AM | All-Out Fallfest 1M, 5K, 10K, Half and Full Marathon Marathon Run, Half Marathon Run, 10K Run, 5K Run | Church Ranch Office Park Westminster, CO |
Sun., 10/31/21 9:00 AM | All-Out Kooky-Spooky 1M, 5K, 10K & Half Marathon Half Marathon Run, 10K Run, 5K Run, 1 Mile Run | North Area Athletic Complex Golden, CO |
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