Silver Rush 50 Mile and 25K

Leadville 124 E. Sixth Street, Leadville, CO, United States

Take on 50 miles of extreme territory that starts at 10,200 feet and reaches 12,000 feet on four separate occasions at the Silver Rush 50 Run. It will leave your […]

Silverton Alpine Marathon

Memorial Park - Silverton 1800 Greene St, Silverton, CO, United States

Experience 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 […]

Pagosa Duathlon

Turkey Springs area Cnr Turkey Springs & Monument Rds, Pagosa Springs, CO, United States

The venue of the San Juan National Forest could not be more perfect for the Pagosa Duathlon as athletes trek through aspen groves, grassy fields, and the dreaded rocky Piedra Stock driveway. Join Rise Above Violence on July 10th in Pagosa Springs for this annual event.

$45

Hahns Peak Hill Climb

Hahns Peak 64625 County Rd 129, Clark, CO, United States

This trail race is a new event that started in 2017 at the base of Hahns Peak in North Routt County. Running this course started with a few hardcore North […]

Kendall Mountain Run

Memorial Park - Silverton 1800 Greene St, Silverton, CO, United States

Meet 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 […]

Hardrock 100 Endurance Run

Memorial Park - Silverton 1800 Greene St, Silverton, CO, United States

About The Run The Hardrock Hundred Mile Endurance Run is an ultramarathon of 100.5 miles in length, plus 33,050 feet of climb and 33,050 feet of descent for a total […]

Canceled Roger’s River Run 5K

Roger's Grove Park 220 S. Hover St., Longmont, CO, United States

Friday, July 7 | 7:30 pm | Roger's Grove Join us, Friday, July 7, in your glow and party apparel, to run, walk, or dance the 5K, all the way […]

$25 – $35

Aspen Valley Marathon

Lions Park 101 Midland Ave, Basalt, CO, United States

Mark your calendars – Don’t miss out on this exhilarating race through the stunning landscapes of Aspen, Colorado! Join us for a one-of-a-kind experience that you’ll cherish forever. The Aspen […]

All-Out Dog Days – 5K, 10K and Half Marathon

Church Ranch Office Park 10170 Church Ranch Wy, Westminster, CO, United States

Get ready for some fun in the sun and a great mid-season test of your training as we bring our 11th Annual Dog Days 5K, 10K & Half Marathon! Centrally […]

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.