Istria 100 by UTMB® 42K is a 42.5 km trail race of Istria 100 by UTMB 2026 in Motovun, Croatia. The race starts on April 11, 2026 at 12:00 PM. It starts in Motovun and finishes in Umag. The time limit is 8 h.
The course climbs 1153 m+. With 27 m/km of climbing, this is a rolling, mostly runnable course. By gradient, 18% of the distance is uphill, 25% downhill and 57% flat. The longest climb runs 2.2 km at an average 9.1% grade (206 m of vertical). The longest descent runs 3.0 km at 8.4% (249 m of vertical). The steepest climb averages 21.9% over 1.0 km. The steepest descent drops at 20.6% over 0.3 km. Surface: 37% trail, 35% smooth, and 24% road. Flat-equivalent effort: 49.9 FlatKM.
Poles bring little benefit here — only about 2.1 km of pole-friendly terrain.
This page has the interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for Istria 100 by UTMB® 42K.
Other distances of Istria 100 by UTMB 2026Istria 100 by UTMB® 168K (168 km)·Istria 100 by UTMB® 110K (111 km)·Istria 100 by UTMB® 69K (69.6 km)·Istria 100 by UTMB® 21K (21.5 km)
Other editions of Istria 100 by UTMB® 42K2027·2025
Official websiteistria.utmb.world
