High Challenge is the 14.0km trail race at Absolute Biokovo Challenge 2027 (Croatia). The race starts on May 9, 2027.
Run the climb at race pace, build your speed on the downhill, and go all out at the finish.
The course climbs 1720m+. With 123m/km of climbing, the course is exceptionally steep, with long hiking-grade sections. By gradient, 55% of the distance is uphill, 32% downhill and 12% flat. The longest climb runs 9.6km at an average 16.5% grade (1585m of vertical). The longest descent runs 3.8km at an average 9.2% grade (345m of vertical). The steepest climb averages 53.2% over 0.2km. The steepest descent drops at 41.3% over 0.4km. Surface: 46% trail, 27% technical, 12% road, and 5% smooth. Flat-equivalent effort: 24.7 FlatKM.
The highest summit on the course is Sveti Jure (1762m), 8.4km from the start. Other named summits along the route: Veliki Troglav (1658m) and Sedmina (1563m).
Trekking poles are strongly recommended: about 3.4km of the course is steep enough for them to pay off.
There is too little runnable descent to damage the quads: plan the race around climbing and fuelling.
On race day, start temperatures have historically ranged from 14°C to 21°C, with around 10°C at the highest point; the chance of precipitation is about 30%. Heavy rain of 10.0mm or more falls on about 6% of days around this date.
This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for High Challenge.
Other distances of Absolute Biokovo Challenge 2027Extreme Challenge (45.4km)·Sky Challenge (27.2km)·Vertical Challenge (5.0km)
Other editions of High Challenge2026·2025
Official websiteabsolute-biokovo-challenge.com/o-utrci
