Istria 100 by UTMB® 21K is a 21.0 km trail race of Istria 100 by UTMB 2025 in Umag, Croatia. The race starts on April 10, 2025. The course climbs 150 m+. Flat-equivalent effort: 20.8 FlatKM.
349 finishers completed the 2025 edition. Men's winner: Johannes Nussbaumer (Austria) in 1:11:42. Women's winner: Caterina Stenta (Italy) in 1:29:18.
This page has the full results and splits, interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for Istria 100 by UTMB® 21K.
Other distances of Istria 100 by UTMB 2025Istria 100 by UTMB® 168K (168 km)·Istria 100 by UTMB® 110K (110 km)·Istria 100 by UTMB® 69K (69.0 km)·Istria 100 by UTMB® 42K (42.0 km)
Official websiteistria.utmb.world
