- Events
- Organizers
- Racing Underground
Ralston Creek Half Marathon
Move by Morelli 6542 Fig Street, Arvada, CO, United StatesThe Ralston Creek Half Marathon and 5K follow a mix of roads and bike paths on the west side of Arvada. The 5K is mostly flat and fast, with a small rise in the final mile. The opening four miles of the half-marathon are fairly flat, with a barely noticeable gradual gain in elevation. Miles […]
Chilly Cheeks Winter Duathlon
Cherry Creek State Park 4201 S Parker Rd, Aurora, CO, United StatesWe have decided to hold one Chilly Cheeks event this winter rather than a three-race series. The stand-alone Chilly Cheeks event will be held in the traditional duathlon format of Run-Bike-Run. Both runs will be 2.5 miles and the bike course will be 10.8 miles. As always, we will provide a marked and marshaled course, […]
Three Creeks Half Marathon
Cherry Creek State Park 4201 S Parker Rd, Aurora, CO, United StatesTravel on foot through some of the most beautiful parts of Cherry Creek State Park, with a total combined elevation gain of only 253 feet spread out over 13.1 miles as the course follows the banks of Cherry Creek, Windmill Creek, and Cottonwood Creek on a mix of road, paved running trail, and wide dirt […]
Postponed Blue Sky Ascent
Echo Lake Campground 13264 Chicago Creek Rd, Idaho Springs, CO, United StatesAlthough the air will be noticeably thin at the starting line, Echo Lake's 10,600 feet of elevation is just the beginning. The climb totals nearly 4,000 vertical feet - much of it above treeline - as you make your way 14.5 miles to the finish line located at the summit of one of the most […]
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.