31.7km is a 31.7 km trail race of Kočevsko Outdoor Festival 2026 in Jezero Kočevje, Slovenia. The race starts on May 30, 2026. The course climbs 1016 m+ and descends 1330 m−, between a low point of 473 m and a high point of 1085 m. By gradient, 29% of the distance is uphill, 38% downhill and 33% flat. The longest climb runs 2.3 km at an average 10.6% grade (241 m of vertical). The longest descent runs 2.4 km at 10.5% (249 m of vertical). Surface: 66% trail, 19% smooth, and 12% technical. Flat-equivalent effort: 43.1 FlatKM.
207 finishers completed the 2026 edition. Men's winner: Sandor Szabo (Hungary) in 2:28:45. Women's winner: Aja Kozinc (Slovenia) in 3:12:33.
This page has the full results and splits, interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for 31.7km.
Other distances of Kočevsko Outdoor Festival 202661.5km (61.5 km)·14km (14.1 km)·10km (10.2 km)·Vertical (2.6 km)
Other editions of 31.7km2025
Official websitekocevsko-outdoor.si/en
