woman walking on green grass field

Ultra-Trail Kosciuszko by UTMB 161K

161K·Thredbo, New South Wales
ultra100 mile100k50kmountainforesthigh altitudetrailqualifier

Photo by Massimo Sartirana on Unsplash

Distance161K
Date26 Nov 2026

About This Race

The 161K represents the ultimate test in the Snowy Mountains, demanding runners navigate the full spectrum of alpine terrain across what amounts to nearly four marathons of technical mountain running. This distance requires seasoned ultra runners who can maintain steady pacing through extended granite scrambles and high-altitude sections while managing the significant physiological demands of Australia's most challenging mountain ultra. Runners will experience the complete transformation from dawn through multiple weather cycles, making this a true expedition-style race that rewards experience in long-distance mountain navigation and fueling strategies.

Practical Info

Accommodation

Event hub located at Friday Flat in Thredbo, Australia's ultimate alpine playground with lakeside accommodation and mountain resort options.

Best For

ultrarunnersmountain runnersexperienced trail runners

Notable Features

Part of the prestigious UTMB World Series, this event features unrivalled crew access and spectator points throughout the Snowy Mountains. The race takes advantage of Australia's unique alpine environment, offering runners the chance to experience snow gum forests, granite outcrops, and crystal-clear mountain streams in a festival atmosphere designed for the entire trail running community.