Jan Bartoszewicz currently has a ranking of Advanced Level A+ (week 44/2026), which is position TOP 10K among men in Poland. Jan has run 24 scored trail races. The best scoring result achieved is several hundred RMT points on a course of ⨦ 42 km and + 450 m vertical during Maraton Żubra in 2024. They recently participated in Supraski Maraton Leśny 2026 and scored a lot of RMT points.