42km is the 42.0km trail race at Plitvice marathon 2027 (Croatia). The race starts on June 6, 2027.
Start easy, build your effort, and go all out at the finish.
The course climbs 1100m+. With 26m/km of climbing, this is a rolling, mostly runnable course. By gradient, 29% of the distance is uphill, 34% downhill and 37% flat. The longest climb runs 3.4km at an average 6.9% grade (234m of vertical). The steepest climb averages 17.4% over 0.2km. Surface: 99% road. Flat-equivalent effort: 51.5 FlatKM.
The course is runnable enough that trekking poles are not needed.
Quad damage risk is low (index 10 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 20°C at the highest point; the chance of precipitation is about 47%. Heavy rain of 10.0mm or more falls on about 9% of days around this date.
This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for 42km.
Other distances of Plitvice marathon 2027Polumaraton Valentina Valjak (21.0km)
Other editions of 42km2026·2025
Official websitethegreatrefresh.com/plitvice-maraton