Slovenia · Carinthia (Koroška)
K24 Ultra-Trail
Distance
100 km
Date
August 7, 2026
Entry fee
120 EUR
€ / km
€1.20
Slovenia’s cult ultra: steep climbs, rocky ridges, and the iconic 24-hour mountain challenge vibe.
Elevation and Terrain
Total Meters
5420m
D+/KM
54.2m/km
For context, the Tor des Géants 330 loop has 73 D+/km.
Avg Uphill Gradient
13.9%
Avg Downhill Gradient
-13.6%
Uphill gradient distribution
Route Profile
Analysed 2026-05-02Terrain breakdown
Terrain
Climbs
Top climbs
5.4 km · 1051 m gain
starts km 9 · avg 19.5% · max 41.8%
6.2 km · 758 m gain
starts km 36 · avg 12.2% · max 46.5%
3.8 km · 623 m gain
starts km 75 · avg 16.2% · max 39.6%
Top descents
9.5 km · 1090 m drop
starts km 79 · avg -11.5% · max -44.6%
5.5 km · 841 m drop
starts km 16 · avg -15.4% · max -47.6%
4.7 km · 554 m drop
starts km 31 · avg -12.0% · max -44.2%
Race files
Logistics
Nearest airport
Ljubljana (LJU) / Klagenfurt (KLU) / Trieste (TRS)
Notes
Start: ~1.0–2.5 hrs to Črna na Koroškem area / Public transport: limited; buses to Slovenj Gradec/Ravne + taxi last-mile; car recommended / Accommodation: limited in Črna; book early; alternative base in Slovenj Gradec
