Ultra-Trail Kosciuszko by Utmb

Bullocks Flat, Australia • 26-28 Nov 2026

Oceania's Alpine Ultra-Trail

Ultra-Trail Kosciuszko by UTMB is a trail running event held in the Snowy Mountains National Park in New South Wales, Australia. The event forms part of the UTMB World Series and takes place in an alpine environment characterized by granite outcrops, snow gum forests, and alpine meadows. The courses traverse varied terrain, including mountain streams, crystal-clear lakes, and the ascent of Australia's highest peak.

Participants can choose from four primary distance options:

  • KosciMiler: A 161 km course with 4710 meters of elevation gain, awarding 4 Running Stones.
  • Kosci100: A 102 km course with 2881 meters of elevation gain, awarding 3 Running Stones.
  • Kosci50: A 50 km course with 1300 meters of elevation gain, awarding 2 Running Stones.
  • Kosci30: A 32 km course with 610 meters of elevation gain, awarding 1 Running Stone.

The event is hosted in Thredbo and is designed as a trail running festival. It provides facilities for competitors such as shuttle buses, drop bag services, and designated check-in procedures. There is a focus on community involvement, with specific spectator points and access locations for support crews throughout the Snowy Mountains region. Mandatory gear is required for participation to ensure safety in the alpine countryside. Visit the organization's website for the most recent information.

Race information

UTMB 20K UTMB 50K UTMB 100K UTMB 100M
161 km
Koscimiler
102 km
Kosci100
50 km
Kosci50
32 km
Kosci30
Visit the organization's website for the most recent information.
Trail runs nearby

Experience trail running through the native forests and farmlands of Corryong. Reach the summit of Mount Elliot and take in expansive views of the Upper Murray region on courses ranging from 3 km to 33 km.