Bison Ultra Trail 2021

Bison Ultra Trail in 2021, a running event organized in Supraśl (Poland) from 2 / 3 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 50k (⨦ 50.5 km / + 1 100 m) in class RMT3 with average terrain slope 2% (G2). Course 35k (⨦ 36 km / + 750 m) in class RMT2 with average terrain slope 2% (G2). Course 15k (⨦ 16.5 km / + 350 m) in class RMT1 with average terrain slope 2% (G2). Course 70k (⨦ 71 km / + 1 500 m) in class RMT4 with average terrain slope 2% (G2).