Event details subject to change. Please confirm all information via event website.
Catfish Flats
Chatfield State Park 11500 N Roxborough Park Road, Littleton, CO, United StatesWe host one race per month from November to March. All races are at Chatfield State Park and start at 9:00 am on Saturday mornings. Check-in starts at 8:15 am.
Ugly Sweater 5K
Left Hand Brewing Company 1265 Boston Avenue, Longmont, CO, United StatesJoin us for The Ugly Sweater 5k on December 6, 2025, for a 5k-ish, fun run event that starts and ends at this awesome taproom in Longmont. Run, walk, jog […]
Jingle Jog 5K
Mountain Tots Pre-School 236 W 3rd St, Eagle, CO, United StatesJingle Jog is a fun run event to support Mountain Tots fundraising goals. The event will include a 1K kids fun run and 5K route option for participants. Starting in […]
Onesie Dash
The Tavern at Red Feather Lakes 1078 Ramona Dr, Red Feather Lakes, CO, United StatesEnjoy a scenic little dash in and around Red Feather Lakes, Colorado! Wear your favorite onesie (and layer it underneath if you need extra warmth!). Start at The Tavern at […]
Race Of The Santas 1M
Canteen Tap House 208 N Main St, Breckenridge, CO, United StatesStart the winter festivities in Breckenridge by lacing up your running shoes for the RACE OF THE SANTAS! The race kicks off on Main Street directly in front of the Canteen Tap House (208 […]
Tortoise & Hare 6K
Spring Park 2100 Matthews St, Fort Collins, CO, United StatesThe Tortoise & Hare (T&H) is a low-key “handicap” series of seven races that are run monthly from October to April, typically on the first or second Sunday of the […]
Rock Canyon Half Marathon
City Park - Pueblo 800 Goodnight Ave, Pueblo, CO, United StatesIt is exciting to bring you another exquisite day of racing alongside the scenic Arkansas River! This is a fast course that starts in Pueblo's City Park and takes you […]
RMRR Wash Park 4.5M
Washington Park - Denver 701 S Franklin St, Denver, CO, United StatesEveryone – slow, fast, or in-between – can win at RMRR Trophy Series races. With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great […]
Rudolph Ramble 5K
City Park - Denver 1700 N York St, Denver, CO, United StatesThe RunDenver Series is the original running series in Colorado and has been a staple for over three decades. Produced by HAL Sports, the series promises a fun time through […]
Chase the Glow 5K
Bond Park Macgregor Avenue, Estes Park, CO, United StatesCome experience the Estes Park lights at this family friendly Christmas run/walk. Participants will follow a paved 4 mile route through all of Estes Park's amazing holiday light displays finishing […]
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