Oceania's premier 100-miler, summiting the roof of Australia
Oceania's premier 100-mile ultra, the KosciMiler threads through the heart of Australia's Snowy Mountains — weaving across alpine meadows, snow gum forests, and golden pastures, over crystal-clear creeks and past ski villages, culminating in a summit of Mt Kosciuszko (2228m), the highest point on mainland Australia. The course starts in Jindabyne, climbs through the Thredbo Valley to the alpine plateau, visits Perisher, Charlotte Pass, Guthega and Smiggin Holes, then finishes at Friday Flat in Thredbo. Exceptionally runnable and scenic, with outstanding crew support access throughout.
Experienced ultrarunners
Jindabyne, NSW, AustraliaNovember 27, 2026
Must complete a 50K race or longer within the qualification window
Qualifying window: October 15, 2024 – October 15, 2026
Submission deadline: October 15, 2026
Official finish of a 50km or longer trail race between 15 October 2024 and 15 October 2026. Must submit a weblink to official results showing completion within cutoff time. Proof due by 15 October 2026 via participant dashboard. Runners who fail to meet criteria by deadline are moved to Kosci100.
| Location | km | Elevation |
|---|---|---|
Start Start | 0.0 | 909 m |
Finish Finish | 156.5 | 1,370 m |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
Late November sits at the start of the Australian summer. Expect warm daytime temperatures at lower elevations (15–22°C) and cold nights at altitude (near 0°C or below at the summit). The Snowy Mountains are notorious for volatile alpine weather: sudden thunderstorms, rapid temperature drops, and strong winds on exposed ridgelines are all possible. The 2024 edition saw a two-hour race hold due to adverse weather. Runners start at 3:00am and will experience the full range of overnight and daytime conditions.
Snowy Mountains alpine conditions can deteriorate rapidly; race was paused ~2 hours for adverse weather in 2024
3:00am start and overnight sections at altitude; near-freezing temperatures possible at summit (2228m)
No required gear specified
No recommended gear specified
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