Wolf Backyard Ultra Bulgaria
Wolf Backyards Ultra Bulgaria, presented by The Gray Wolf, set in on the northwestern slope of the Vitosha mountain, is a true test of one’s endurance, persistence, and discipline. The premise is quite simple. Can you run 6,7 kilometers in ONE hour? And do it again and again and again….until you are the LAST RUNNER STANDING!
Past editions
| Date | Winner | Yards | Starters |
|---|---|---|---|
| Oct 17, 2026 | Petar Hristov | 21 | 68 |
| Aug 23, 2025 | Nikolay Hristov | 26 | 2 |