Half Marathon

Embark on your journey by winding through Old Town Nederland, the epitome of Colorado mountain towns. The Half Marathon will take you on dirt roads and single track trails as […]

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 […]

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 […]

The Estes Park Marathon is America’s most scenic marathon course! In the marathon, runners enjoy our famous road course that is surrounded by glorious 360 degree views of Rocky Mountain […]

Marathon, Half Marathon, 10k, 5k and 3-Person Marathon Relay.  Marathon, Marathon Relay and Half Marathon runners get to run down the scenic, downhill Poudre Canyon to the finish in Old […]

Denver’s oldest half marathon runs along the Platte River Trail, covering parts of Littleton and Denver.

The first Canyonlands Half Marathon was run on May 1, 1976 had just 22 finishers, including a dog. Today, thousands of runners come together in March to enjoy the scenic […]

Arches Ultra travels along the border of Arches National Park, using Bar M, Klonzo, and Klondike Trail Systems.  The trails are smooth and easy at points, technical slick rock at […]

Run alongside the roaring Elk River through the emerald green pastures on Country Road 129 with the snow-capped Rocky Mountains of Colorado all around and find out why the Steamboat […]

Because a girls weekend should include an exciting challenge, we present Thelma and Louise Marathon Half Marathon and 15K! There is also a marathon and 50K option!  Bring your best […]