O'brien Trail Races

The Kinni is an adventurous running event held at Kinnickinnic State Park in River Falls, Wisconsin. Unlike traditional races, participants navigate the park using a provided map to find four hidden books, tearing out pages matching their bib numbers as proof. Covering varied terrain and distances t..

The Baby Backyard Ultra is a trail running event held in Maple Grove, Minnesota, offering distances from 5K up to a 50K ultra marathon. Participants start a 5K loop every hour on the hour, continuing until they complete 50K or choose to stop, making it accessible for runners and walkers of all level..

The Mindy Creek Trail Races take place in St. Croix Falls, Wisconsin, starting at the Polk County Information Center. The event offers three distances: a marathon, half-marathon, and 10K, all featuring scenic trails with technical sections, small hills, bridges, and a mix of single track, gravel, pa..

The Ravine Trail Run 5k / 10K is a moderately challenging trail race held in Cottage Grove, Minnesota, featuring cross-country ski trails with hills, valleys, shaded trees, and sunny prairie sections. The course is a 3.2-mile loop with varied terrain including grass, mud, packed dirt, and rocky wash..

The Sunrise 5k in Wyoming, MN, is a community-focused running event held along the Sunrise Trails near Casey's General Store. This 5-kilometer race welcomes runners, joggers, walkers, and even participants pushing strollers or walking with dogs, creating a friendly and inclusive atmosphere. The even..

The Utepils Trail Loppet is a popular urban trail running event held in Theodore Wirth Park, Minneapolis's largest regional park. It offers three race distances: a half marathon, a 10K (half of a half marathon), and a 5K, providing a rugged trail running experience through diverse terrain including..