Jan Mrázek currently has a ranking of Expert Level B+ (week 23/2026), which is position TOP 100 among men in Czech. Jan has run 15 scored trail races. The best scoring result achieved is several hundred RMT points on a course of ⨦ 73 km and + 4 250 m vertical during Transvulcania in 2018. They recently participated in Supermaraton Gór Stołowych 2025 and scored a lot of RMT points.