Event details subject to change. Please confirm all information via event website.

  • Vail Mountain Winter Uphill

    Lionshead Gondola Vail, CO, United States

    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 event will conclude with breakfast and awards at Eagle's Nest, provided by Vail Ski Resort and US Foods. This event honors the memory of Vail local, Lyndon […]

  • Toyota Super Half Mararthon

    Pioneers Museum 215 South Tejon Street, Colorado Springs, CO, United States

    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 for paydirt there in the 14th Toyota Super Half Marathon & Game Day 5K. This is Colorado Springs’ Super Sunday Tradition! We have a flat […]

  • Parker Recreation Run Series

    Love ’em or Leave ’em 5K/10K

    Salisbury Park 11920 N Motsenbocker Rd, Parker, CO, United States

    Will 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! Part of the Parker Parks and Recreation Run Series, this event is professionally timed. Registered participants will receive a race shirt, race bib and a […]

  • Heart Throb 5K

    Memorial Park - Arvada 8001 West 59th Ave, Arvada, CO, United States

    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 your heart pumping by cruising through this flat and fast 5k run (or walk!) Many participants choose this event to 'earn' the rich foods they […]

  • Racing Underground Winter Running Series

    Ralston Creek Half Marathon

    Move by Morelli 6542 Fig Street, Arvada, CO, United States

    The Ralston Creek races feature a fun winter half-marathon and 5K run conveniently located on the west side of the Denver Metro Area in Arvada, Colorado. The courses covers a scenic mix of road and bike path over rolling terrain, and an optional early start time for half-marathon runners who expect to take more than […]

  • Stories Trail Runs

    Cheyenne Mountain State Park 410 JL Ranch Heights, Colorado Springs, CO, United States

    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 sweeping views of the Colorado Front Range below. This event features an amazing community atmosphere made possible by our main staging area/aid station at the […]

  • Turquoise Trail Ultra

    Gutierrez Canyon Open Space 12216 NM-14, Cedar Crest, NM, United States

    -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 Church just north .25 miles. There is a sidewalk to get to the start/finish line. -This trail race will take place rain/snow/sunshine! Parking will NOT […]

  • Big Brrrrito! 5 Mile

    Chatfield State Park 11500 N Roxborough Park Road, Littleton, CO, United States

    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.

  • Chilly Cheeks Winter Duathlon Series

    Chilly Cheeks Winter Duathlon

    Cherry Creek State Park 4201 S Parker Rd, Aurora, CO, United States

    The Chilly Cheeks Duathlon Series is now a stand-alone event held in late February. The 63rd Chilly Cheeks Duathlon will be held in the traditional format of Run-Bike-Run. Both runs will be 2.5 miles in length and the bike course will be an 11 mile paved road route. As always, we will provide a marked […]

  • All-Out Mardi Crawl

    Apex Center 13150 W 72nd Ave, Arvada, CO, United States

    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 golf course communities, shady, creekside beauty and a NEW relatively gentle half marathon course around Long Lake Regional Park. With its Endless Series counterpart Runapalooza, […]

  • 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.