Event details subject to change. Please confirm all information via event website.
Freakin Freezin 5K
It's that time of year when brave runners lace up, layer up, and take on the chill! The Freakin' Freezin' 5K is all about starting the new year with some […]
Arches Ultra
Arches Ultra travels along the border of Arches National Park, using Bar M, Klonzo, and Klondike Trail Systems. The trails are smooth and easy at points, technical slick rock at […]
Sourdough Snowshoe Race
The race is intended to be a difficult and fun free of charge backcountry event; any and all plans can change due to trail conditions for the runner’s safety. Snowshoes […]
Old Man Winter Rally 5K/10K
Bundle up and get ready to run and/or ride Colorado's best mixed terrain at the Old Man Winter Rally in Lyons on February 6th. Runners can crush the 10K course of single track trails, red rock canyon and gravel paths while riders can choose a 50K or 100K of dirt, snow, climbs and thrills! With a ragin' after party with hot food and cold beer, what more could you want?
Running Up for Air
Running Up for Air unites our community over a shared passion for running and a desire to drive real, lasting change in the fight for cleaner air. Through endurance events […]
Sweet Heart Run
This February, run your heart out, sweetheart! Choose between a 5K or 10K along the scenic Fruita Trail System, and don’t forget to dress up for the costume contest. After […]
Vail Mountain Winter Uphill
Join us as skiers, snowboarders and winter runners tackle 2,200 vertical feet of groomed trails to reach Eagle's Nest at the top of the Eagle Bahn Gondola in Lionshead. The […]
Super Sunday Fun Run
Reynolds Landing 6745 S. Santa Fe Drive, Littleton, CO, United StatesBring the entire family to run or walk before the big game and enjoy a post-race party at Breckenridge Brewery Farmhouse. Runners and walkers of all ages and abilities are […]
Toyota Super Half Mararthon
The streets and trails of downtown Colorado Springs are not exactly the “Frozen Tundra of Lambeau Field” but on Super Bowl Sunday, Feb.8, 2026, more than 1,500 runners will race […]
City LAX Dash
The Dash is an event to kick-off the spring season and support Denver City Lax. Schools, teams and individuals have been rallying together at the Dash the past nine years.
Valentine Twosome
This is just a fun, casual race with optional costumes. Grab your sweetheart, a friend or family member, just bring someone besides yourself, dress up in red, pink, any fun […]
Sweetheart Classic
Sweetheart City Racing is excited to once again hold this year’s event. With a race start and awards in Downtown Loveland it will be right in the center of the […]
Canceled Virginia Canyon is for Lovers
This Valentine's Day, grab your favorite human and join us for a partner race celebrating love in all its forms: true romance, bromance, or simply a love for running! The […]
CMRA Forty Furlongs
This is a flat out-and-back 5 mile course on Westminster's trail system (nearly all concrete path). Start and finish will be at Sensory Park. The route starts outbound on Walnut Creek […]
Love ’em or Leave ’em 5K/10K
Salisbury Park 11920 N Motsenbocker Rd, Parker, CO, United StatesWill you embrace the holiday full of heart or run from Cupid? Either way, you're going to LOVE this fun and festive workout with family and friends...oh, and those pancakes! […]
Heart Throb 5K
Are you a Heart Throb? Grab your best running buddy and come on out to Johnny Roberts Memorial Park on the Saturday before Valentines Day. Celebrate the ability to get […]
Cupid Shuffle Valentine’s Day 5K
Single, taken, or it’s complicated… either way, the Cupid Shuffle – Valentine’s Day 5K has your back. No chocolates, no awkward dinners, just a solid run (or walk) to shake […]
Stories Trail Runs
The Stories Trail Runs is a unique winter trail running adventure taking place in Colorado Springs, CO against the breathtaking backdrop of Cheyenne Mountain, and “America’s Mountain” Pike’s Peak, with […]
Turquoise Trail Ultra
-Start/Finish line will be at the Gutierrez Canyon Open Space parking lot, located off Hwy 14. 12216 NM-14, Cedar Crest, NM 87008 -Over flow parking will be at Mountain Christian […]
Big Brrrrito! 5 Mile
We 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.
Brewery Running Series Kickoff
Join us for our kickoff party, with special deals on all 2026 events, merch/beer discounts, an optional 5k route, giveaways, and more! We are kicking off the 2026 season of […]
All-Out Mardi Crawl
From the award winning Apex Center, these 5K, 10K & Half Marathon courses will run west along the 2020 Best of the Best Ralston Creek Trail through Arvada's open spaces and stunning […]
Bacon Strip Race
The Bacon Strip Races were the creation of our late friend, Jane Welzel. Jane passed on Aug 31st, 2014 and while she can not be here physically to cheer us […]
Highlands Ranch 5K
Winter never disappoints us when racing in February in Highlands Ranch! You won't feel chilly after a course so hilly! After conquering the 5k, warm up with hot apple cider […]
Red Hot Ultra
The Red Hot is located northwest of Moab, Utah just west of Arches National Park. Red Hot runners will have majestic views of the La Sal Mountains to the southeast […]
Time to Paddy Race
Join us for the annual Time to Paddy 5k/10k and Lucky 13.1 Half Marathon! A St. Patrick-themed run that is perfect for the whole family. The fun includes great swag […]
Canceled Snowman Stampede Half Marathon, 10K and 5K
The Snowman Stampede is a flat and fast half marathon, 10K and 5K race held every February in Littleton Colorado. Come to Hudson Gardens and run the race that everyone […]
Uncle Clyde’s Run & Slide
Get ready for the wackiest race ever in Durango! It’s on the tubing hill. Run up… tube down. Repeat! Most laps wins! Oh, and it’s a relay race!
Cupid’s Undie Run
THE PANTLESS PARTY WITH A PURPOSE! Run a ‘Mile(ish)' in Your Undies, Because Kicking NF's Butt is Worth the Chilly Cheeks Every February, thousands of undie runners in cities across […]
Polar Plunge 5K
Are you ready for the COOLEST event of the season! Whether you're a daring plunger, a speedy 5K runner/walker, or a thrill-seeker ready to do BOTH, the Polar Plunge & […]
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.