Marathon

Run one of the fastest-growing, top-rated marathons in the country! After nearly tripling in size and selling out last year, Boulderthon has instituted a new 5,000 runner cap and is expected to sell out again this year. Run a 5k, 10k,…

Utilizing the beautiful trails that surround Aspen, The Aspen Backcountry offers two options, a full or heavy half-marathon, both run almost exclusively on dirt trails. The diversity of terrain, challenging ascents & descents and…

Welcome to the annual Windsor CO Race! This year's event will start and end at The Island at Pelican Lakes in Water Valley, with a great after party including beer, music and live entertainment! New to the series is a Full Marathon…

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 Valley Marathon takes place in the heart…

Come celebrate the 11th Annual Colorado Springs Marathon presented by Centura Health on Saturday, September 28, 2024!  Whether you are a seasoned runner or looking to tackle your first 5k, we have you covered with 4 events to choose from. …

The Pikes Peak Marathon, founded in 1956, is the oldest continually held marathon in the United States, taking runners from Manitou Springs, Colorado, to the summit of Pikes Peak at 14,115 feet, and back down for a total of 26.2 grueling…

Valkyrie Trail Race was created as a women only trail/ultra event,  featuring Colorado Spring’s, Cheyenne Mountain State Park.  The race offers amazing views of the city and a diverse eco-system. We have several different distances…

Run through the historic mining district’s challenging old mining roads and trails, and hit a high of 13,185 feet at Mosquito Pass during the Leadville Trail Marathon or Heavy Half Marathon. The views will leave you breathless, if you’re…

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,…

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…