Malofatranská stovka MF100 runs 106.6 km point-to-point from Terchová to Fačkov through Malá Fatra National Park in western Slovakia along the Malofatranská magistrála ridgeline. With only 9.7% flat terrain, the course is almost entirely climbing or descending: the distance-weighted average uphill gradient of 15% ranks 80th of 390 GPX-tracked courses in the DTR database (top 21% steepest), and the -15.8% average downhill ranks 337th of 390 on the inverted scale — one of the steepest average descents in the database.
Multiple sections require fixed chains and ladders on exposed rocky terrain; the 66.9% maximum gradient on Climb 2 marks a chain-assisted near-vertical passage. Top single descent: 1,040m drop, rank 18/390 — top 5% by absolute fall across all DTR-tracked courses. The late-race combination is defining: Climb 3 (692m / 14.5% avg, km 92.76) transitions with a 120m gap into Descent 2 (791m / -12.6% avg, km 97.41) — nearly 1,500m of vertical change in the final 10–14km. 49 finishers in 2024 and 2025 — one of the smallest 100km+ fields in Europe. 5 ITRA points. Sells out annually in spring. Next edition June 2027.