Event details subject to change. Please confirm all information via event website.
Vallecito Lake Heavy Half
The Vallecito Lake Heavy Half Marathon is a beautiful and scenic course around Vallecito Lake. Nestled in the heart of the San Juan Mountains in Colorado, our race course takes runners completely around the picturesque Vallecito Reservoir with a special section that runs right across Vallecito Dam. If you ever wanted to run all the […]
Gluten Free Gallop
Join Denver Celiacs to raise awareness of celiac disease and all gluten-related disorders. Our 13th Annual Gluten Free Gallop 5K will take place at Clement Park in Littleton, CO, on Saturday, May 16, 2026, from 9:00 AM-12:00 PM. This year we will also be offering our very popular ROCK Fun Run again! This is a […]
Ouray Backyard Ultra
A Backyard Ultra. Complete an easy 4.167 mile course. If you finish in less than an hour—just a 14:24 pace per mile—you get to do it again at the top of the hour. The race continues hour after hour until there is only one person left. To secure the win, that person must successfully complete […]
Colfax 5K
Come run City Park in the Colfax 5K! Go for a PR in this chip-timed race – separate stroller-friendly start wave for families and walkers. And, you can run with your dog in the dog wave presented by Evolution Veterinary Specialists! Afterparty with live music. A great chance to be a part of Marathon weekend […]
Colfax Marathon
New for our 20th Year! “WOW” at Every Mile To celebrate our 20th, every mile will have a WOW for runners. That moment every mile that gives you that WOW and extra energy for the miles to come. We are inviting local musicians, artisans, drumlines, choirs, … to be part of our WOW for our […]
Wild Horse Half Marathon
Set against the breathtaking backdrop of the luxurious High Lonesome Ranch, this isn’t just a race—it’s a full weekend of adventure and celebration! Runners will enjoy a country cookout, campfires, live local music, and camping accommodations. It’s the perfect blend of rugged terrain and western hospitality, complete with a lively hoedown to round out the weekend. […]
Mt Sopris Run-Off
The Mt Sopris Run-Off takes place in Carbondale, CO and offers two distances – 10-Miles and 28k. Historically this race has been a part of the Town of Carbondale’s Mountain Fair Weekend in late July. In 2026, the race will take place on Sunday, May 17th as part of a growing trail running festival weekend […]
Miles for Smiles 5K
The Miles for Smiles 5K is a friendly event that begins and ends on the track at the North Area Athletic Complex (NAAC) in Arvada with a scenic trek along the Fairmount Trail in the middle. Join Right Start Events on May 15th, 2022 for this 5K and Adaptive Dash.
Canine On the Creek 5K
Gather your family and friends, including your furry friends—don't forget Fido! Grab your running (or walking) shoes and join us in supporting FOCP (Friends of Charlie's Place), the Clear Creek and Gilpin County Animal Shelter, and CCMRD Youth Programs. The exciting course takes you through both paved and dirt trails along the picturesque Clear Creek. […]
Turquoise Lake 20K
The Turquoise Lake 20K offers unparalleled mountain views as you run clockwise around scenic Turquoise Lake. The first 7.5 miles of the course consists of hilly paved road. The final 5.5 miles consist of single track dirt trail.
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