Half Marathon

Welcome to the SPRING FLING Prairie Dog Half (part of the Prairie Dog Half series)! This spring-time event also features 10k & 5k distances!

The Arctic Prairie Dog race is the perfect motivation to get your New Year's goals calendar off and running (pun intended!). Check a half marathon, 10k or a 5k off your list on the 16th day of the New Year! Will it be easy? Nope. Will it be…

The Run the Rockies Road 10k and Half Marathon will feature the traditional Run the Rockies Road Race course with runners starting near Copper Mountain; runners will follow the paved recreation path through the Ten Mile Canyon. The 10k…

The Run the Rockies Trail 10k and Half Marathon will lead runners through the Frisco Peninsula trails with breathtaking views of Lake Dillon and the Ten Mile Range. This is a great course for a first time half-marathoner or runner looking…

Started in 2004 as a fall companion to the popular Canyonlands Half Marathon, Arches Half Marathon has hosted many runners on the road course. In 2021, Arches became a trail event. The new course features beautiful red rock formations,…

Celebrate the last blast of summer at the Labor Day Half Marathon. Sweat your socks off and let summer have its last hooray at Parker's Salisbury Park just a few miles southeast of Denver. There's a distance to meet every taste with a half…

Come join over 21,000 runners from all over the world in the Mile High City! 2 Days, 8 Races means a distance for everyone! 26.2 Marathon through the stadium, fire station, downtown, Sloan’s Lake, Colfax Ave, 7 miles of water 13.1…

Embark on your journey by winding through Old Town Nederland, the epitome of Colorado mountain towns. The Half Marathon, 10K and 5K will take you on dirt roads and single track trails as you challenge yourself to be “a little more extreme“…

Part of the Colorado Mountain Half + Series, Georgetown to Idaho Springs Half Marathon is a Colorado Runner’s Must-Do. This iconic Half Marathon is one of the most pleasurable races in the western US. The point-to-point course is a scenic…

The Mt. Sneffels Half-Marathon and Kids Fun Run began 25 years ago. In 2021, the 10 K was added. The Race is the foundation’s major fundraising event of the year.  It is supported by sponsorships from businesses and individuals, over 400…