Dubrovnik 21K is the 21.0km trail race at Dubrovnik Spartan Trail 2026 (Mlini, Croatia). The race starts on October 24, 2026 at 09:30 AM. It starts in Mlini and finishes in Srđ. The time limit is 7 h.
Run hard on the first mountain, but save energy for the second.
The course climbs 1243m+. With 59m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 36% of the distance is uphill, 32% downhill and 32% flat. The longest climb runs 5.1km at an average 12.6% grade (639m of vertical). The longest descent runs 6.7km at an average 8.2% grade (548m of vertical). The steepest climb averages 30.5% over 0.3km. The steepest descent drops at 26.4% over 0.3km. Surface: 45% trail, 29% smooth, and 7% road. Flat-equivalent effort: 35.6 FlatKM.
The highest summit on the course is Malaštica (628m), 5.1km from the start. Other named summits along the route: Zvijezda (521m) and Srđ (415m).
Poles bring little benefit here: only about 3.2km of pole-friendly terrain.
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 16°C to 21°C, with around 16°C at the highest point; the chance of precipitation is about 35%. Heavy rain of 10.0mm or more falls on about 14% of days around this date.
This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Dubrovnik 21K.
Other distances of Dubrovnik Spartan Trail 2026Dubrovnik 50K (50.0km)·Dubrovnik 10K (10.0km)
Other editions of Dubrovnik 21K2025
Official websitewww.spartantrail.com/dubrovnik
