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KosciMiler is a 161 km ultra trail of Ultra-Trail Kosciuszko by UTMB 2026 in Thredbo, Australia. The race starts on November 26, 2026.
By gradient, 36% of the distance is uphill, 29% downhill and 36% flat. The longest climb runs 7.4 km at an average 8.9% grade (655 m of vertical). The longest descent runs 7.4 km at 8.9% (655 m of vertical). The steepest climb averages 19.2% over 0.2 km. The steepest descent drops at 29.3% over 0.2 km. Surface: 75% trail, 13% smooth, and 12% road.
Poles bring little benefit here — only about 8.2 km of pole-friendly terrain.
Quad damage risk is moderate (index 48 of 100), with 37% of the load in the first half: 1 descents deserve a plan and a couple of downhill sessions before race day.
This page has the interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for KosciMiler.
Other distances of Ultra-Trail Kosciuszko by UTMB 2026Kosci100 (107 km)·Kosci50 (50.0 km)
Other editions of KosciMiler2025
Official websitekosciuszko.utmb.world