Event details subject to change. Please confirm all information via event website.
Foundry Halloween 5K
Soda Creek Elementary School 220 Park Avenue, Steamboat Springs, CO, United StatesA relatively new event to close out the Steamboat Springs Running Series season, bringing people of all ages together to celebrate Halloween in a safe, sober and fun way. The […]
Spooky Sprint 5K
Carpenter Park 3498 E 112th Ave, Thornton, CO, United StatesGet ready to lace up your sneakers (or your costume!) for Almost Home’s first-ever Spooky Sprint 5K! Join us on Saturday, October 25, 2025 at Margaret Carpenter Park in Thornton […]
YMCA Creepy Crawl 5K
Palmer Lake Regional Park 199 County Line Road, Palmer Lake, CO, United StatesOur annual "spooky themed" race starts at the Palmer Lake Regional Recreation Area. We head down the scenic Santa Fe Trail for a bit then turnaround and finish with a […]
Eerie Erie 5K/10K
Erie United Methodist Church 604 Holbrook St, Erie, CO, United StatesThe world-famous Eerie Erie is a Halloween-themed 5k and 10k race that runs through historic downtown Erie and takes advantage of our beautiful trail system that weaves along the Coal […]
MonsterDASH
Sloan's Lake Park 1700 Utica Street, Denver, CO, United StatesColorado's Favorite Halloween Runs....Each year the Theme Changes!! 2025 brings...SCARY CLOWNS / Circus Theme! Our best theme yet. Saturday Race is in Denver at 9:30am... then Sunday is in Louisville […]
Halloween Fun Run
Clear Creek Middle School 320 Chicago Creek Rd, Idaho Springs, CO, United StatesThis Halloween, join us for a spooky 5k or 1 mile loop through the Pioneer Cemetery in Idaho Springs!! Try for a PR or take a leisurely stroll as you […]
BOO Run 5K
WestCo Brewing 905 Struthers Ave, Grand Junction, CO, United StatesCostume up and bring your family and friends, we will haunt the town on our 5k route along the river while taking in the beautiful fall colors followed by a […]
Spooky Sprint 5K
Pueblo YMCA 3200 E. Spaulding Ave, Pueblo, CO, United StatesThis eerie evening race winds through a chilling course at the YMCA of Pueblo. The thrilling Halloween themed race is perfect for all ages and fitness levels. Recommended for those […]
Narrowleaf Lake Run
Boyd Lake State Park 3720 N Co Rd 11C, Loveland, CO, United StatesBrisk autumn running in Colorado – OH YEA! Join us for a family fun event with three distance options at the beautiful Boyd Lake State Park venue. What’s a “Narrowleaf” […]
The Stride 5K/10K
Littleton Museum 6028 S. Gallup St., Littleton, CO, United StatesYou’re invited to The Stride, a family-friendly 5K, 10K, Kids Fun Run, and Wellness Expo in Littleton on October 24th. Benefitting the Littleton Public Schools Foundation, this event brings together the community for a great cause.
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