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Ultra-Trail Kosciuszko by UTMB
161km161107km10750km50

KosciMiler

UTMB World Series
161.0km
November 26
Thredbo,
Australia
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Read

  • Hill Training for Trail Runners: Train the Descents
  • Downhill Running Muscle Damage: Why Descents Wreck Quads
  • How to Stop Muscle Cramps While Running

More 100 miles trail races

KosciMiler — Race Profile

Distance
161 km
Max
2214 m
Min
908 m

About KosciMiler

KosciMiler is a 161 km ultra trail of Ultra-Trail Kosciuszko by UTMB 2026 in Thredbo, Australia. The race starts on November 26, 2026.

Course

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

Poles bring little benefit here — only about 8.2 km of pole-friendly terrain.

Quad damage

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.

  • Control on the marked descents until km 80, target pace until km 128, free after that. Short descents not listed: target pace.
  • #1 · 73.2–78.1 km · 433 m D−, -8.9% · 51% of the race ahead → control
  • 117.9–126.4 km · 716 m D−, -8.4% · 21% of the race ahead → target pace
  • 155.2–160.1 km · 644 m D−, -13.2% · 0% of the race ahead → even, let go at the end

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