Event details subject to change. Please confirm all information via event website.
Royal Gorge Groove Trail Runs
Royal Gorge Ranch and Resort 1 Buckskin Joe Parkway, Cañon City, CO, United StatesPrepare for some fun in Cañon City! Enjoy scenic views along the rim of the Royal Gorge, 900 feet above the Arkansas River. All races will start/finish at the Royal Gorge Ranch & Resort. Distances include a 50K, 30K, 20K, 13K, 5K and Kids Run. Make a weekend out of it with river rafting and […]
Ram Party Trail Runs
Buffalo Lodge Bicycle Resort 2 El Paso Blvd, Colorado Springs, CO, United StatesWith plenty of race options for everybody centered around the beautiful Rampart Reservoir in Woodland Park, Colorado, you're sure to have a good time while you take in the epic views of Pikes Peak and the front range. 55 Mile | 60K | 50K | 24K | 15K
North Fork Trail Race
BPIA Community Hall 18050 S. Buffalo Creek Road, Buffalo Creek, CO, United StatesThe North Fork 50 Mile/50K is 100% trails, mainly single track and some double track, starting and finishing along lovely Buffalo Creek, in the mountains about 50 miles southwest of Denver. This is a pure ultra, a very special and unique race, deliberately kept small so each runner gets personal attention. There are no non-ultra […]
Ring the Springs Trail Races
Rock Ledge Ranch Garden of the Gods Park 3202 Chambers Way, Colorado Springs, CO, United StatesGet ready for an unforgettable adventure at Ring the Springs trail running races in the stunning Colorado Springs, Colorado! This thrilling event showcases the area's incredible natural beauty, with a course that weaves through majestic mountains, scenic city parks, and iconic landmarks. The route is designed to challenge and inspire, featuring exhilarating climbs and rewarding […]
Silverton Alpine Marathon
Memorial Park - Silverton 1800 Greene St, Silverton, CO, United StatesExperience the best of the San Juan Mountains with an 8 miler, a marathon, or a 50 kilometer run along the Alpine Loop past the historic mining ghost towns of Howardsville, Eureka, Animas Forks & Gladstone. High point is 12,930 ft atop California Pass. Low point is Silverton at 9,318ft. Total vertical gain is 3,800 […]
Kendall Mountain Run
Memorial Park - Silverton 1800 Greene St, Silverton, CO, United StatesMeet the mountain this summer in Silverton, Colorado! The Kendall Mountain Run starts in downtown Silverton and traverses jeep roads to within a final 300 vertical foot scramble to the summit of Kendall Mountain overlooking town and the majestic San Juan Mountains. Ascend from 9,318 feet to 13,066 feet to tag the summit! Experience the […]
Backcountry Marathon
Rio Grande Park Aspen, CO, United StatesUtilizing the beautiful trails that surround Aspen, and now offering three distances - 50K, marathon and heavy half-marathon, all of which run almost exclusively on dirt trails. For the first time in 2025, Aravaipa is introducing an ultra distance that will follow the marathon course and include an out and back to the McNamara Hut […]
Rock Hawk Trail Race
Phillip S. Miller Park 1375 West Plum Creek Pkwy, Castle Rock, CO, United StatesHeld on the gorgeous, thrilling and rolling trails of Castle Rock’s Miller Park & Ridgeline Trail systems. While not overly technical, these trails will challenge and excite, as you soak up the amazing views. This is an excellent race for both first-time and veteran trail runners, and provides a nice test for those who are […]
Bear Chase Trail Race
Bear Creek Lake Park 15600 W Morrison Rd, Lakewood, CO, United StatesThe Bear Chase Race Endurance Festival is a 100K, 50 Mile, 50K, Half Marathon, Baby Bear 10K and 5K trail race at beautiful Bear Creek Lake Park, in Lakewood, CO. Ultra races on Saturday, short trail races on Sunday An excellent race for first time trail and ultramarathoners, runners will experience a variety of challenging […]
Bobcat Trail Races
Palmer Park 3343 Paseo Rd, Colorado Springs, CO, United StatesBobcat Trail Race was created to feature one of Colorado Spring’s best city parks, Palmer Park. Runners will enjoy views of the city and Pikes Peak from the rocky bluffs. Come out and enjoy this amazing trail system, right in the heart of the city! Formerly a Mad Moose Event & graciously passed on to […]
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.