INTERSPORT SPEED 15K is a 15.0 km trail race of Julian Alps Trail Run by UTMB 2025 in Kranjska Gora, Slovenia. The race starts on September 19, 2025. The course climbs 550 m+ and descends 585 m−, between a low point of 739 m and a high point of 1011 m. By gradient, 31% of the distance is uphill, 24% downhill and 46% flat. The longest climb runs 2.3 km at an average 6.0% grade (141 m of vertical). The longest descent runs 2.7 km at 9.4% (252 m of vertical). Surface: 59% trail and 39% road. Flat-equivalent effort: 21.1 FlatKM.
627 finishers completed the 2025 edition. Men's winner: Adrian Brănescu (Romania) in 1:14:18. Women's winner: Julia Rath (Germany) in 1:27:29.
This page has the full results and splits, interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for INTERSPORT SPEED 15K.
Other distances of Julian Alps Trail Run by UTMB 2025I Feel Slovenia 120K (124 km)·Lake Bled 80K (80.0 km)·Sky Trail 50K (50.0 km)·Kranjska Gora 25K (25.0 km)·FUNNY 10K (10.0 km)
Other editions of INTERSPORT SPEED 15K2026
Official websitejulianalps.utmb.world
