13km is the 13.0km trail race at Trail na Mljetu 2027 (Croatia). The race starts on May 1, 2027.
Short race: go all out.
The course climbs 527m+. With 41m/km of climbing, this is a rolling, mostly runnable course. By gradient, 23% of the distance is uphill, 31% downhill and 45% flat. The longest climb runs 1.9km at an average 13.5% grade (252m of vertical). The longest descent runs 4.9km at an average 6.5% grade (322m of vertical). The steepest climb averages 19.3% over 0.9km. The steepest descent drops at 23.9% over 0.3km. Surface: 46% trail, 31% road, and 20% technical. Flat-equivalent effort: 18.3 FlatKM.
The course also passes close to Debela glavica (123m).
Poles bring little benefit here: only about 1.4km of pole-friendly terrain.
Quad damage risk is low (index 8 of 100): a few descents worth noting, none of them decisive.
On race day, start temperatures have historically ranged from 15°C to 23°C, with around 18°C at the highest point; the chance of precipitation is about 32%. Heavy rain of 10.0mm or more falls on about 8% of days around this date.
This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for 13km.
Other distances of Trail na Mljetu 202742km (42.0km)·23.4km (23.4km)
Other editions of 13km2026·2025
Official websitethegreatrefresh.com/mljet-trail