Duff Dog Backyard Ultra

The Duff Dog Backyard Ultra is an endurance running event held at Blue Mounds State Park near Luverne, Minnesota. The race features a runner-friendly loop course primarily on grass trails, with some gravel and a short paved section, covering 4 miles 880 feet (6.7 km) per loop. Participants run one loop every hour, starting precisely on the hour, continuing until only one runner remains.

The event offers shaded support areas, a shelter building, and nearby camping for family and friends. The race follows strict rules including no personal aid during loops and no artificial aids. The winner is the last runner to complete a loop, making it a challenging test of endurance and strategy. Visit the organization's website for the most recent information.