18km is the 18.0km trail race at Arilje Trail 2026 (Arilje, Serbia). The race starts on September 19, 2026 at 09:15 AM. It starts and finishes in Arilje. The time limit is 4 h.
Run the climb at race pace, build your speed on the downhill, and go all out at the finish.
The course climbs 830m+. With 46m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 43% of the distance is uphill, 38% downhill and 19% flat. The longest climb runs 9.1km at an average 5.9% grade (538m of vertical). The longest descent runs 3.2km at an average 10.1% grade (321m of vertical). The steepest climb averages 13.9% over 1.6km. The steepest descent drops at 26.7% over 0.2km. Surface: 65% trail, 22% road, and 8% smooth. Flat-equivalent effort: 25.4 FlatKM.
The course is runnable enough that trekking poles are not needed.
Quad damage risk is low (index 11 of 100): a few descents worth noting, none of them decisive.
On race day, start temperatures have historically ranged from 13°C to 26°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 41% of days around this date.
113 finishers completed the 2026 edition. Men's winner: Stenli Kipruto (Serbia) in 1:22:24. Women's winner: Elena Sokolova (Serbia) in 2:00:35.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for 18km.
Other distances of Arilje Trail 2026Dvodnevna Ultra (81.0km)·31km (31.0km)
Official websitetrka.rs/events/892-arilje-trail
