31km is the 31.0km trail race at Arilje Trail 2026 (Arilje, Serbia). The race starts on September 19, 2026 at 08:45 AM. It starts and finishes in Arilje. The time limit is 6 h.
Run easy on the first mountain, then go all out on the second.
The course climbs 1400m+. With 45m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 32% of the distance is uphill, 46% downhill and 22% flat. The longest climb runs 1.8km at an average 13.3% grade (240m of vertical). The longest descent runs 3.2km at an average 9.6% grade (310m of vertical). The steepest climb averages 24.7% over 0.8km. The steepest descent drops at 23.0% over 0.3km. Surface: 60% trail, 18% smooth, and 16% road. Flat-equivalent effort: 44.2 FlatKM.
Poles bring little benefit here: only about 1.9km of pole-friendly terrain.
Quad damage risk is low (index 19 of 100): a few descents worth noting, none of them decisive.
On race day, start temperatures have historically ranged from 12°C to 24°C, with around 21°C at the highest point; the chance of precipitation is about 59%. Heavy rain of 10.0mm or more falls on about 45% of days around this date.
55 finishers completed the 2026 edition. Men's winner: Đuro Borbelj (Serbia) in 2:48:00. Women's winner: Ivana Živković (Serbia) in 3:08:27.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for 31km.
Other distances of Arilje Trail 2026Dvodnevna Ultra (81.0km)·18km (18.0km)
Official websitetrka.rs/events/892-arilje-trail
