4th Duff Dog Backyard Ultra
4th Duff Dog Backyard Ultra is a 29-hour timed race in Luverne, Minnesota, United States, taking place on Oct 10 – Oct 11, 2026.
- Date
- Oct 10 – Oct 11, 2026
- Duration
- 29 h
- Location
- Luverne, Minnesota, United States
- Format
- Timed race