23K Blue Trail is the 23.0km trail race at Bjelasica Ultra Trail 2026 (Kolašin, Montenegro). The race starts on August 8, 2026 at 07:00 AM. It starts and finishes in Kolašin. The time limit is 6 h.
Run the climb at race pace, build your speed on the downhill, and go all out at the finish.
The course climbs 1120m+. With 49m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 28% of the distance is uphill, 35% downhill and 37% flat. The longest climb runs 9.0km at an average 10.7% grade (959m of vertical). The longest descent runs 13.5km at an average 7.7% grade (1036m of vertical). The steepest climb averages 28.0% over 0.4km. The steepest descent drops at 27.4% over 0.2km. Surface: 72% trail, 14% smooth, and 13% road. Flat-equivalent effort: 31.7 FlatKM.
The highest summit on the course is Velika Miljevača (1930m), 9.0km from the start. Other named summits along the route: Kobilja glava (1687m). The course also passes close to Kukunovac (1295m).
Trekking poles are worth taking: about 3.9km of the course favours them.
Quad damage risk is low (index 15 of 100): a few descents worth noting, none of them decisive.
On race day, start temperatures have historically ranged from 13°C to 22°C, with around 15°C at the highest point; the chance of precipitation is about 34%. Heavy rain of 10.0mm or more falls on about 4% of days around this date.
177 finishers completed the 2026 edition. Men's winner: Miloš Pavlović (Serbia) in 2:07:19. Women's winner: Imogen Pieters (Great Britain) in 2:29:31.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for 23K Blue Trail.
Other distances of Bjelasica Ultra Trail 202660K Red trail (60.0km)·40K Green Trail (40.0km)·12K Orange Trail (12.0km)
Other editions of 23K Blue Trail2025
Official websitebjelasicatrail.me
