Eltuck Valley 12K Trail Series

The Into the Hills Eltuck 10k is a challenging trail race held at Lory State Park in Bellvue, Colorado. Part of a midweek summer trail series, this event features a hilly 10-kilometer course with approximately 1,700 feet of elevation gain, offering runners scenic mountain views. The race is designed..

The Into the Hills Eltuck 5K is a midweek trail race held at Lory State Park in Bellvue, Colorado. Part of a summer trail series, this event features a challenging course with a steep, quick climb and descent along the Homestead, Well Gulch, and Kimmons loop, offering about 700 feet of elevation gai..

Front Range Ultra Dayze is an ultra-running festival held in Loveland, Colorado, featuring a variety of ultra-distance events including 50k, 100-mile, 200-mile, and timed races up to 100 hours. The course is a flat, fast 2-mile loop through Centennial Park and River’s Edge Natural Area, mostly on di..

The Black Squirrel Half Marathon is a 13.5-mile trail race held in Lory State Park near Fort Collins, Colorado. Featuring approximately 2,000 feet of elevation gain and loss, the course offers a challenging yet accessible perimeter tour of the park with stunning views of Horsetooth Reservoir, Fort C..

The Red Feather Trail Jamboree is a three-day trail running event held at Ben Delatour Scout Ranch in Red Feather Lakes, Colorado. Scheduled for September 26-28, 2025, it offers three race distances: a 50-mile ultra with 8,500 feet of elevation gain, a 50K with 4,200 feet gain, and a half marathon f..

Rocky's Backyard Ultra is a unique ultra trail race held at the YMCA of the Rockies in Estes Park, Colorado, known as the highest organized Backyard Ultra in the world. Runners complete 4.167-mile laps on a challenging singletrack course featuring about 500 feet of elevation gain and loss per lap, w..