Lionshead Ruck

Join the Expo Park XC Runs in Aurora on Sunday October 19 for youth and adult cross country races from 1k to 5k. Enjoy mostly grassy, gently rolling courses with a creek crossing and bale jumps for a fun, family friendly race day.

Tackle scenic dirt trails at Bear Creek Lake Park with 5 km, 15 km, a 5 plus 15 double, or a kids 1 km. Registration includes socks or a neck gaiter and a pancake breakfast while kids earn a stuffed bear at the finish.

Join the 17th Backcountry Wilderness Half Marathon, a single loop 13.1 miles trail in Highlands Ranch with mountain views and wildlife. November trails can be muddy or snowy; finishers receive a tech shirt, medal, pancakes and post race bee..

Run scenic mountain trails at Staunton State Park with 50k, 16 mile and 8 mile options among alpine meadows and granite cliffs. Limited to 250 runners, the race offers well stocked aid stations and variable winter weather.

Niwot’s Challenge is an invitation only, navigation driven ultra near Sedalia CO that emphasizes self reliance on rugged off trail terrain. Choose roughly 24, 50, or 100 mile routes with massive elevation gain and strict no GPS rules for a..

North Fork 50 : Event details The North Fork 50 Mile/50K is scheduled for Saturday, May 30, 2026, in Buffalo Creek, Colorado. The start and finish are at the Buffalo Creek Clubhouse, 18050 S Buffalo Creek Rd, Buffalo Creek, CO 80470. Distan..