Bigfoot Half Marathon
Bond Park Macgregor Avenue, Estes Park, CO, United StatesA road half marathon & 5k in beautiful Estes Park, finishing downtown amidst the infamous Bigfoot Days Festival. This is a scenic run just outside Rocky Mountain National Park. Finish in Bond Park surrounded by live music, Bigfoot celebrities, and a FREE festival featuring 50+ vendors and booths. Once you're done racing, grab your first […]
NoCo Half Marathon
Boyd Lake State Park 3720 N Co Rd 11C, Loveland, CO, United StatesSpring is the season of renewal and running. We hope you join us for a fun adventure that embodies the spirit of springtime at the beautiful Boyd Lake State Park! Choose from the Half Marathon (13.1 mile) or 10K (6.2 mile) for your run adventure. This course is on smooth paved walkways with about three quarters of a mile […]
Take 5 in the Garden of the Gods
Garden of the Gods Park 1805 N 30th St, Colorado Springs, CO, United StatesWho can turn down a morning in Garden of the Gods? We'll close the park to traffic, so runners can enjoy their race, traffic free! Choose between a 5k or 5 Mile course through the Garden of the Gods. Runners can choose between a road race or a trail race! Beginning in 2022, we've be […]
Greenland Trail Race
Greenland Open Space 1532 E Noe Rd, Larkspur, CO, United StatesThe Greenland Trail Race offers four outstanding distances in southern Douglas County. Run the 4 Miler, the 8 Miler, the 25K, or tackle the 50K ultramarathon, Colorado’s fastest 50K! With Pikes Peak as your backdrop, you’ll cruise over a soft dirt trail on your way to a new personal best. With chip timing, an innovative technical running shirt in men’s and women’s sizing, food and beer at the finish, this race will make you want to come back for more!
PPRR Nielson Challenge
North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United StatesRace Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the […]
PPRR Nielson Challenge
North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United StatesRace Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the […]
Niwot’s Challenge
Sedalia Post Office 4195 Douglas Ave, Sedalia, CO, United StatesNiwot’s Challenge is a very difficult, grass-roots, ultramarathon in Colorado’s Front Range. It is modeled after the arduous Barkley Marathons in Tennessee, and the historic More and More Difficult 50K in New Hampshire. Much of the information for this event is kept secret with an exception for those who are accepted for entry. This is […]
Furry Scurry
Washington Park - Denver 701 S Franklin St, Denver, CO, United StatesThe Furry Scurry is an annual, fun-filled festival and two-mile dog walk at Denver’s Washington Park to benefit the animals at the Dumb Friends League. No matter where you scurry, every step you take and dollar you raise will make a lasting difference for the animals in our care.
Colorado Marathon
Washington Park - Fort Collins 301 Maple St, Fort Collins, CO, United StatesMarathon, Half Marathon, 10k, 5k and 3-Person Marathon Relay. Marathon, Marathon Relay and Half Marathon runners get to run down the scenic, downhill Poudre Canyon to the finish in Old Town, Fort Collins, where we have live music and a big post-race party featuring beer from Odell Brewing Company.
Moose Mudder
Altitude Elementary School 27300 East Southshore Drive, Aurora, CO, United StatesPlease join us for the Annual Moose Mudder! This is a community event that will consist of an untimed 1k fun walk/run and a timed 5k followed by an optional muddy obstacle course. Get your best time, run for fun, walk with a group, form a stroller brigade, or line the streets to cheer everyone […]
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.