Pomerania Winter Trail Challenge in 2021, a running event organized in Gdańsk, Zbiornik Jasień (Poland) on 13 March. During the 3 races were held event. Course 40k (⨦ 41.5 km / + 700 m) in class RMT3 with average terrain slope 2% (G2). Course 20k (⨦ 22 km / + 900 m) in class RMT2 with average terrain slope 4% (G4). Course 10k (⨦ 8 km / + 300 m) in class RMT1 with average terrain slope 3% (G3).