How to Train for Tour du Mont Blanc

What the Tour du Mont Blanc asks of your body

This is a roughly 170 km (105 mi) loop with about 10,000 m (33,000 ft) of cumulative ascent, and the descent is roughly equal. It's rated strenuous, and several passes top 2,500 m. The rhythm repeats: climb out of a valley, cross a col, drop into the next valley, sleep, repeat. That means big climbs and long descents on consecutive days, with rocky switchbacks and loose scree near the saddles. No daily mileage or pack weight is published here, so plan around the pattern of repeated passes rather than any single day.

Start with a weekly base

Start from the CDC adult guidance: 150 minutes of moderate-intensity activity a week, or 75 minutes of vigorous activity, or an equivalent mix. It doesn't have to happen all at once, so you can split it across the week. For a trip this big, treat that as the floor to build on, not the goal. Brisk walking is the most direct way to meet it, since walking is exactly what the trip asks of you. If you have any health concerns, ask a doctor before ramping up.

The training plan, phase by phase

1. 1

   Aerobic base · Weeks 1 to 4

   Build the habit and the engine. Walk most days and meet the CDC weekly baseline, mixing easier and slightly harder efforts. Keep the pack out of it for now. Aim to feel comfortable on your feet for a long walk before adding anything else. Four to eight weeks of base work is the site's general guidance, so extend this phase if you're starting from a low level.

2. 2

   Hills and stairs · Weeks 3 to 6

   Add one hill or stair session a week, overlapping with your base. The route is built from repeated climbs, so choose the longest, steepest hill you can reach and walk it steadily. Stairs work too. Keep the effort sustainable rather than racing up. This session is the closest stand-in for the climb-and-descend pattern the circuit repeats day after day.

3. 3

   Loaded pack walks · Weeks 5 to 10

   Now bring the pack. Many people start around 10 pounds and add weight in small steps. A commonly quoted ceiling is about 20% of body weight. Keep one longer loaded walk each week, ideally with hills in it. Walking with a pack is the part stairs and treadmills can't fully replace, so do the real thing on real ground.

4. 4

   Rehearsal and taper · Weeks 9 to 12

   About two weeks out, rehearse with two loaded walks on consecutive days to see how your legs, feet and shoulders handle the second day. Then taper in the last one to two weeks, cutting volume so you arrive fresh. Allow roughly 8 to 12 weeks overall for a multi-day trip with a full pack.

Strength work that helps on the trail

The CDC recommends muscle-strengthening activity on at least 2 days each week, working all major muscle groups. For this route, put legs, hips and core first, since they carry you and the pack through repeated climbs. Add slow step-downs as well. Site guidance is that stairs replicate downhill poorly, and the long afternoon descents load the quads and can cause delayed soreness. Practicing controlled step-downs prepares your legs for that.

Pack walks and back-to-back days

Begin light, around 10 pounds, and add weight gradually toward a ceiling near 20% of body weight. Because the circuit is spread over many walking days, with each day defined by a pass, the back-to-back rehearsal matters most. Two loaded walks on consecutive days, about two weeks out, show how you recover overnight. Include hills and a long descent in at least one of them, and wear the boots and pack you'll use on the trip.

Terrain and descents

The terrain is the main demand here. Each day pairs a long climb to a col with a long descent into the next valley, with rocky switchbacks, loose scree near the saddle, and a few steep ladder-and-rock steps. Descents load the quads and cause delayed soreness, so train them deliberately with slow step-downs and downhill walking on a loaded pack. Valley buses and lifts can spare tired legs on a wet or hard day, so plan on being flexible rather than treating training as a pass-or-fail test.

Training mistakes to avoid

The most common mistake is never walking with the loaded pack, then meeting its weight for the first time on a col. Another is training only for the climbs and ignoring downhill, which is what leaves quads sore on day after day of descents. Starting too late is also costly, since a multi-day trip with a full pack calls for roughly 8 to 12 weeks. Finally, skipping the taper can mean starting tired, so cut volume in the last one to two weeks.

Common questions