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Mountain Ultra Trail by UTMB
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MUT Marathon

UTMB World Series
43.0km·2312m+
May 30, 08:00 AM
George,
South Africa
source

Race Pace Calculator · GPX Analyzer · Trail Finder

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Read

  • How to Taper for a Marathon, Half Marathon or Ultra
  • Types of Runs and What Each Workout Actually Trains
  • Hill Training for Trail Runners: Train the Descents

Marathon trail race calendar

MUT Marathon · Race profile

Distance
43.0km
Gain
2312m+
FlatKM
59.9
Max
984m
Min
222m

About MUT Marathon

MUT Marathon is the 43.0km trail race at Mountain Ultra Trail by UTMB 2027 (George, South Africa). The race starts on May 30, 2027 at 08:00 AM. It starts in George.

Race strategy

Hold a steady pace and save energy for every section.

  • 311m descent. Go easy, save your quads.
  • Start easy and control your HR up to 21.2km.
  • Hold your race pace up to 35.2km, but stay in control.
  • Ease into the early runnable section, save your quads on the descents until 15.8km, then run your race pace, and go all out on the final descent from 35.2km.
  • Start · 0.0km–1.7km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
  • Settle in · 1.7km–21.2km · Climb of 700m, high point 985m, descent of 311m averaging 12%. Ease in: hold back more than feels necessary. The race is still ahead. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. Running pays off here: run wherever you can.
  • Work · 21.2km–35.2km · Descent of 721m averaging 8%. Plus 2 more climbs. This is where the race is built: steady, solid effort. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them.
  • Home · 35.2km–42.4km · Descent of 466m averaging 6%. No heroics: settle back into your own effort and hold it to the line. Long descent: keep it even and let go only near the end.

Course

The course climbs 2312m+. With 54m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 37% of the distance is uphill, 36% downhill and 27% flat. The longest climb runs 4.5km at an average 15.6% grade (700m of vertical). The longest descent runs 9.3km at an average 7.7% grade (721m of vertical). The steepest climb averages 38.1% over 0.3km. The steepest descent drops at 37.4% over 0.2km. Surface: 82% trail, 8% road, and 8% smooth. Flat-equivalent effort: 59.9 FlatKM.

Poles

Poles bring little benefit here: only about 4.3km of pole-friendly terrain.

Quad damage

Quad damage risk is moderate (index 27 of 100), with 35% of the load in the first half: 2 descents deserve a plan and a couple of downhill sessions before race day.

  • Ease into the early runnable section, save your quads on the descents until 15.8km, then run your race pace, and go all out on the final descent from 35.2km.
  • #1 · 13.3–15.8 km · 311 m D−, -12.1% · 26.6 km ahead → control
  • #2 · 22.1–31.4 km · 721 m D−, -7.7% · 11.0 km ahead → your pace
  • 35.2–42.4 km · 466 m D−, -6.4% · 0.0 km ahead → even, let go at the end

Weather

On race day, start temperatures have historically ranged from 10°C to 15°C, with around 12°C at the highest point; the chance of precipitation is about 23%. Heavy rain of 10.0mm or more falls on about 3% of days around this date.

This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for MUT Marathon.

Other distances of Mountain Ultra Trail by UTMB 2027MUT Miler (168km)·MUT 100 (100km)·MUT 60 (58.0km)·MUT Challenge (25.0km)·MUT Lite (11.9km)

Other editions of MUT Marathon2026

Official websitemut.utmb.world