Horsetooth Half Marathon, Relay & 5K

Sunday, April 19, 2015 • Fort Collins, CO • Course Map

active-reg-buttonVoted the state’s number-one half marathon by Colorado Running Magazine readers, the Horsetooth Half Marathon is a point-to-point half that starts runners in the shadows of nearby Horsetooth State Park on a course that includes both paved surfaces and bike trails, with some steep hills and elevation changes.

The start of the race begins at 5,195 feet above sea level and takes runners by the second mile on a nearly 600-ft. elevation climb to “Monster Mountain,” after which the race begins a long, slow descent towards the finish with two major exceptions — Dam Hill, between miles 4 and 5, and Bingham Hill, between miles 7 and 8.

The starting line is located at Colorado State University’s Hughes Stadium on the western side of town, and from there runners travel northward past Horsetooth Reservoir toward the towns of Bellvue and Laporte, where participants a brief detour (about 200 yards) onto the Overland Trail and then make an eastward turn onto the Poudre River bike path, which they take toward Fort Collins.

From there, the course follows the bike path into town to College Avenue and to Linden Street, where the finish line lies at the New Belgium Brewery.

(Note: Due to construction along the race route, for this year’s event the course has been modified slightly, and will start just over half a mile from Hughes Stadium. Please see the official race website here for more details.)

Race Weather & Climate

Located along the front range of the Rocky Mountains in northern Colorado, about 65 miles north of Denver and roughly 45 miles south of Cheyenne, Wyo., Fort Collins typically sees cold to mild weather in April, a month that has brought record temperatures here as low as 10 degrees below zero (in 1945) and as high as 89 degrees (in 1992).

On race day (April 19), the average low is 35ºF and the average high is 62ºF.

Past Results

Course Map

See the race route map for the Horsetooth Half Marathon here.

Starting Time

  • 8:30 AM – half marathon, relay
  • 9:00 AM – 5K


See race website


To reserve your spot in the 2015 running of Fort Collins’s Horsetooth Half Marathon, Relay or 5K race, register online at here.


Official Race Website

Facebook Conversations

Ever run in the Horsetooth Half Marathon? Share your impressions here, or post your review in the Comments below.

See more races in: April, Colorado

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