Kosmaj 10k

Race strategy

Short race: go all out.

• Hold your race pace up to 4.5km, but stay in control.
• Go easy on the first downhill, save your quads on the descents until 4.5km, 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.
• Work · 1.7km–4.5km · Descent of 354m averaging 8%, high point 568m. This is where the race is built: steady, solid effort. This descent is hard on the legs: short steps, stay in control, poles if you have them.
• Home · 4.5km–10.4km · Climb of 370m. Kick for the line: give it everything you've got. Climb by heart rate or breathing, not pace.

Course

The course climbs 569m+. With 57m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 46% of the distance is uphill, 39% downhill and 15% flat. The longest climb runs 5.9km at an average 6.3% grade (370m of vertical). The longest descent runs 4.5km at an average 7.9% grade (354m of vertical). The steepest climb averages 22.7% over 0.8km. The steepest descent drops at 23.3% over 0.7km. Surface: 86% trail and 9% road. Flat-equivalent effort: 13.2 FlatKM.

Summits

The highest summit on the course is Mali vis (576m), 10.4km from the start.

Poles

Poles bring little benefit here: only about 0.8km of pole-friendly terrain.

Quad damage

Quad damage risk is low (index 8 of 100): a few descents worth noting, none of them decisive.

• Go easy on the first downhill, save your quads on the descents until 4.5km, then run your race pace.
• #1 · 0.0–4.5 km · 354 m D−, -7.9% · 5.9 km ahead → control

Weather

On race day, start temperatures have historically ranged from 15°C to 26°C, with around 22°C at the highest point; the chance of precipitation is about 43%.

Results

437 finishers completed the 2025 edition. Men's winner: Ivan Miškeljin (Serbia) in 56:47. Women's winner: Sara Ilić (Serbia) in 1:05:40.