Marija Kostic currently has a ranking of Expert Level B (week 45/2026), which is position TOP 10 among women in Serbia. Marija has run 11 scored trail races. The best scoring result she achieved is several hundred RMT points on a course of ⨦ 22 km and + 2 700 m vertical during Matterhorn Ultraks in 2025. She recently participated in Matterhorn Ultraks 2025 and scored a lot of RMT points.