Half Marathon

This exciting half marathon course is a fun loop on the beautiful flowy single track in Fruita CO. With short steep climbs and descents featuring beautiful views of the nearby […]

Join us for the Erie Half and 5k! The Hometown Race Series features half marathons and 5k distance events in outlying communities outside the Denver and Boulder metro areas. LOOK […]

Get ready for a ROYALly GORGEous experience! Whether you’re tackling the 5K, the 8-mile trail run, or the half marathon trail run, this event offers something truly special. All three […]

Due to the Aspen Acres Fire, the half marathon had been cancelled in 2026.  The Beulah Challenge, which started in 1996, is a 5K, 10K, and half-marathon run near Beulah, a small […]

From the base of Table Mountain and Colorado’s spectacular foothills, All-Out Multicourse presents our 11th annual Spring Fever from Jefferson County’s NAAC Stadium… easily accessible from several nearby highways. Along […]

From the award winning Apex Center, these 5K, 10K & Half Marathon courses will run west along the 2020 Best of the Best Ralston Creek Trail through Arvada’s open spaces and stunning […]

Do you support life at all stages from conception until natural death? Do you believe every human being should be treated with the utmost dignity and the respect they deserve? […]

Register for Nebraska’s Most Beautiful Race - the Monument Marathon, Half Marathon and 5K on September 24th in Gering, just two hours from Fort Collins. Experience towering natural landmarks, pine-covered hills, rugged badlands, and a rural landscape that provides a stunning and tranquil experience. Run along part of the Oregon Trail, the course traverses through Mitchell Pass and around Scotts Bluff National Monument.

Join us for the New Belgium Half Marathon and 5k on Sunday, October 4, 2026. The course starts and ends at this beautiful Fort Collins, Colorado brewery. The out-and-back course […]

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 […]