Duff Dog Backyard Ultra

Luverne, United States • 11 Oct 2025

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.

Race information

6 km
4 Miles (6.7056 Kilometers)
Visit the organization's website for the most recent information.
Trail runs nearby

The 605 Trail Fest is a trail running event held at Good Earth State Park at Bloodrun in Sioux Falls, South Dakota. Scheduled for August 9, 2025, it features three races catering to various ages and abilities: an 8-mile challenging trail race for ages 14 and up, a 4.5-mile race for ages 11 and older..

The Great Bear Trail Races take place in Sioux Falls, South Dakota, featuring 3-mile and 6-mile trail runs, along with a free kids' race of about one mile. The course is set in the scenic Great Bear Recreation Area, known for its mix of wide gravel paths, single-track trails, and grassy sections, wi..

The Trick or Treat Trail Run 10K is part of the 17th Annual Trick or Treat Run held in Sioux Falls, South Dakota, at Pasley Park along the Big Sioux River. This festive event includes a 10K run, a 5K run/walk, and a Candy Dash for children aged 3-10, covering 0.5 miles. Participants receive a goodie..

The TutHell 50K is a unique ultramarathon held in Sioux Falls, South Dakota, featuring a challenging course that consists of running a 0.31-mile loop up and down Tut Hill 100 times. The course includes approximately 90 feet of elevation gain and loss per loop, with a grassy terrain and a well-marked..