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Kočevsko Outdoor Festival
61.5km61.531.7km31.714.1km14.110.2km10.22.6km2.6

31.7km

31.7km·1016m+
May 30
Jezero Kočevje,
Slovenia
source

Race Pace Calculator · GPX Analyzer · Trail Finder

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Full calendar: Slovenia

31.7km · Race profile

Distance
31.7km
Gain
1016m+
FlatKM
43.1
Max
1079m
Min
473m

About 31.7km

31.7km is the 31.7km trail race at Kočevsko Outdoor Festival 2026 (Jezero Kočevje, Slovenia). The race starts on May 30, 2026.

Race strategy

Run hard on the first mountain, but save energy for the second.

  • 259m descent. Go easy, save your quads.
  • The finish is runnable. Save your legs to run it all the way.
  • Control your HR on the first mountain, save your quads on the way down from it until 4.3km, then run your race pace.
  • Start · 0.0km–1.7km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
  • Settle in · 1.7km–14.8km · Climb of 241m, high point 1085m, descent of 259m averaging 13%. Plus 1 more descent. Ease in: hold back more than feels necessary. The race is still ahead. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. Running pays off here: run wherever you can.
  • Work · 14.8km–21.9km · Plus 1 more climb and 1 descent. This is where the race is built: steady, solid effort. Climb by heart rate or breathing, not pace.
  • Home · 21.9km–32.1km · 10.1km of runnable trail. Build to the finish: leave whatever you have left out on the course. Running pays off here: run wherever you can.

Course

The course climbs 1016m+. With 32m/km of climbing, this is a rolling, mostly runnable course. By gradient, 31% of the distance is uphill, 36% downhill and 33% flat. The longest climb runs 2.3km at an average 7.1% grade (163m of vertical). The longest descent runs 4.9km at an average 5.0% grade (247m of vertical). The steepest climb averages 26.0% over 0.2km. The steepest descent drops at 19.1% over 0.3km. Surface: 66% trail, 19% smooth, and 12% technical. Flat-equivalent effort: 43.1 FlatKM.

Summits

The highest summit on the course is Veliki Rog (1099m), 2.3km from the start. Other named summits along the route: Lovski vrh (830m). The course also passes close to Bezgova gorica (1009m).

Poles

The course is runnable enough that trekking poles are not needed.

Quad damage

Quad damage risk is moderate (index 20 of 100), with 55% of the load in the first half: 1 descent deserves a plan and a couple of downhill sessions before race day.

  • Control your HR on the first mountain, save your quads on the way down from it until 4.3km, then run your race pace.
  • #1 · 2.3–4.3 km · 259 m D−, -13.0% · 27.8 km ahead → control

Weather

On race day, start temperatures have historically ranged from 10°C to 19°C, with around 14°C at the highest point; the chance of precipitation is about 47%. Heavy rain of 10.0mm or more falls on about 10% of days around this date.

Results

207 finishers completed the 2026 edition. Men's winner: Sandor Szabo (Hungary) in 2:28:45. Women's winner: Aja Kozinc (Slovenia) in 3:12:33.

This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for 31.7km.

Other distances of Kočevsko Outdoor Festival 202661.5km (61.5km)·14km (14.1km)·10km (10.2km)·Vertical (2.6km)

Other editions of 31.7km2027·2025

Official websitekocevsko-outdoor.si/en