O'brien Trail Races
Marine on Saint Croix, United States • 20 Sep 2025
The O'Brien Trail Races, scheduled for September 20, 2025, at William O'Brien State Park in Marine on St. Croix, Minnesota, offers a variety of race distances including 50K, 25K, 10K, and 5K. Participants can enjoy scenic trails while competing for awards in various categories.
Registration opens on February 1, 2025, and includes options for race shirts to accommodate different preferences. The event emphasizes a family-friendly atmosphere, particularly with the affordable 5K entry fee aimed at newcomers to trail racing. Post-race refreshments and aid stations will be available, ensuring a supportive environment for all runners. Visit the organization's website for the most recent information.