Bison Ultra Trail 2023

Bison Ultra Trail in 2023, a running event organized in Supraśl (Poland) from 7 / 8 October. During the 5 races were held event. Course 105k (⨦ 104.5 km / + 2 050 m) in class RMT5 with average terrain slope 2% (G2). Course 70k (⨦ 71 km / + 1 500 m) in class RMT4 with average terrain slope 2% (G2). Course 50k (⨦ 52 km / + 1 100 m) in class RMT3 with average terrain slope 2% (G2). Course 35k (⨦ 37 km / + 750 m) in class RMT3 with average terrain slope 2% (G2). Course 20k (⨦ 18 km / + 350 m) in class RMT1 with average terrain slope 2% (G2).