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Guide updated on November 9, 2026

Training for the Tour du Mont Blanc: fitness and 8-week plan

How fit do you need to be for the TMB? The real difficulty, an 8-week training plan, test hikes and tips for avoiding injuries and blisters.

The TMB requires no technical mountaineering skills, but it is a real test of endurance: 166 km and around 9,500 m of elevation gain on the main route, the equivalent of climbing Everest from sea level, with a pack on your back, over eleven consecutive days.

How fit do you need to be?

A healthy person who hikes regularly and can walk 5–7 hours a day with 1,000 m of ascent can do the TMB in 11 days. The challenges are physical rather than technical: the long descents (more than 1,500 m down to Les Houches or Courmayeur) are hard on the knees, and the days take their toll as they add up. A few sections call for sure-footedness: the ladders on the Aiguillette d’Argentière and the boulder fields of the Fenêtre d’Arpette.

An 8-week training plan

WeeksGoalExample
1–2Getting back into it2–3 outings of 1 hour (brisk walking, easy jogging, cycling) + one 3-hour hike
3–4Endurance3 midweek sessions + one 5-hour hike with 800 m of ascent and a 6 kg pack
5–6Back-to-back daysA weekend of two consecutive 6-hour hikes with 1,000 m of ascent, carrying your trekking pack
7Dress rehearsal2–3 days of hut-to-hut trekking if possible, with your fully loaded pack
8RecoveryShort, easy outings; arrive at the start feeling fresh

If you have no mountains nearby, stairs, hills and strength work (squats, lunges, core exercises) are an effective way to prepare your thighs for the descents.

Avoiding injury

  • Start out in boots you have already worn on several long hikes.
  • Treat the slightest hot spot as soon as it appears (hydrocolloid blister bandages).
  • Use poles, especially downhill: they take a lot of strain off your knees.
  • Drink regularly and eat a little every hour.
  • Plan a rest day or a short stage (La Fouly – Champex) halfway round.

Adapting the route to your fitness

Buses and lifts let you skip the hardest sections: the Bellevue cable car on the first day, the Les Chapieux shuttle bus, the La Fouly – Champex bus, and the Brévent cable car for the final descent. Our relaxed 14-day itinerary also shortens the stages.

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