Trail running course near Thredbo, New South Wales, AU
Ultra-Trail Kosciuszko by UTMB

Ultra-Trail Kosciuszko by UTMB 102K

102K·Thredbo, New South Wales
ultra100kmountainforesthigh altitudetrailqualifier

AI-generated image

Distance102K
Date26 Nov 2026
Difficulty4/5

About This Race

The Ultra-Trail Kosciuszko 102K sits in the middle of the UTMB series lineup, offering experienced ultra runners a substantial challenge through Australia's highest alpine country. The course traverses the Snowy Mountains backcountry around Thredbo, taking runners through subalpine woodlands, open high plains, and technical ridge sections that demand both physical endurance and tactical energy management. This distance attracts runners who've progressed beyond 50K events but aren't yet ready for the full 161K commitment. The route requires confidence on technical terrain and the ability to manage nutrition and pacing through extended periods between aid stations, characteristics that define serious mountain ultra running in the Southern Hemisphere's only true alpine environment.

Starting from Thredbo Village at 1,370 meters elevation, the course moves through varied mountain ecosystems that shift from dense eucalypt forest to windswept alpine herb fields. Technical singletrack sections alternate with more runnable fire road stretches, though the precise route configuration varies by year. Runners navigate rocky trail surfaces, root systems in lower elevations, and exposed ridgeline sections where weather conditions can change rapidly regardless of season.

Location

Practical Info

Weather

Late spring conditions in the Australian Alps: daytime temperatures typically 15-25°C at lower elevations, cooler above tree line; afternoon thunderstorms possible; strong winds common on exposed sections.

Best For

ultrarunnersmountain runnersexperienced trail runners

Other Distances at This Event

32K

610m gain

The most accessible distance that still delivers the authentic Snowy Mountains trail running experience. Perfect for runners new to mountain trail running or those seeking a challenging but manageable alpine adventure.

50K

The route departs from Thredbo Village and moves into the Kosciuszko National Park backcountry. Runners encounter mixed terrain that includes established trails through snow gum forests and more exposed sections across alpine areas. The Snowy Mountains present a different alpine experience than European or North American ranges, with gentler gradient approaches to elevation and vegetation adapted to both summer heat and winter snow. The course takes advantage of the region's network of historic trails, some originally cut for grazing and mountain access in the 19th century.

161K

The 161K course explores the full breadth of Kosciuszko National Park's alpine zone, linking classic peaks and remote valleys in a challenging loop. Runners traverse varied terrain including singletrack through snow gum forests, exposed ridgelines with panoramic mountain views, technical rocky sections requiring careful footwork, and sections along historic cattlemen's trails. The route visits iconic locations in Australian alpine history while pushing into lesser-known wilderness areas where runners experience genuine remoteness. Extended sections above treeline expose participants to whatever weather the Snowy Mountains deliver, making this as much a test of mountain craft as running fitness.