Mont Blanc and the Italian Val Ferret seen from Tête Entre Deux Sauts

Bask in Nature · Inspirational proposal

SeasonAugust 2027CountriesFrance · Italy · SwitzerlandStyleSupported self-guided

Best of
Mont Blanc

Five days of running for experienced ultrarunners, linking the best part of a three-country traverse with a Lac Blanc finale.

5 run days~56–64 miles preliminary3 countries
See the proposal ↓

Mont Blanc from Tête Entre Deux Sauts · Rémih · CC BY-SA 4.0 · resized

A border-crossing line, without forcing the full loop.

Start in Les Contamines, run east through France and Italy, cross the Grand Col Ferret into Switzerland, then step straight into a waiting vehicle at La Fouly. The next morning, finish above Chamonix at Lac Blanc.

This shape is for friends who already know long mountain days and want something beautiful, social and logistically supported without joining a fully guided tour. Bag movement, lodging, route files and reserved transfers would do the heavy lifting; we would still be responsible for pacing, navigation, weather calls and mountain safety.

Proposal, not a booking. No accommodation, transfer or operator has been reserved. Distances, climbing, timings, route GPX, August 2027 availability and prices all need verification.

More of the best. Less of the grind.

This is not universally “better” than completing the Tour du Mont Blanc. It is a better fit if our priority is memorable running, recovery and time together—not collecting the full-loop finish.

Our highlights route

Five focused running days

56–64 mipreliminary route

≈6 PTO daysPhoenix/US estimate

€1,200–€1,900land-only planning range

1 refuge nightBonatti + 4 inn/hotel nights

  • Cherry-picks the three-country traverse and gives Lac Blanc its own finale.
  • Builds in a shorter Day 3, private-room targets and a direct La Fouly–Chamonix pickup.
  • The five planned trip nights are one mountain refuge, one Les Chapieux inn/gîte and three hotel nights in Courmayeur and Chamonix. Any pre-start night is additional.

Representative full TMB

Seven continuous running days

≈99 mipublished 7-day stages

≈7–8 PTO daysPhoenix/US estimate

€890 / €1,0802027 classic / comfort base

6 trail nightsrefuge, gîte and/or hotel

  • Wins if the goal is to complete the iconic continuous loop and maximize trail time.
  • Classic means all six nights in refuge/gîte dormitories. Comfort means six twin/double-room nights across gîtes, refuges or hotels.
  • The operator does not publish an exact number of true hut/refuge nights before lodging assignments; a practical land allowance is roughly €1,200–€1,600.

The honest choice: pick this highlights route for scenery-per-day, recovery, comfort and a distinctive finish. Pick the full TMB for the satisfaction of circling the massif and a lower published operator base price.

PTO assumption: weekend travel where possible, one outbound weekday for the five-day plan, and enough time to return from Europe. Actual PTO depends on flights, trip dates and whether anyone wants a recovery day at home.

Full-tour mileage, inclusions and 2027 base rates checked November 10, 2026 from Altitude Montblanc’s published trail-running TMB ↗. All comparison figures remain planning estimates.

Run the line. See the part we skip.

Coral is our proposed running route. Blue is vehicle or lift assistance. The gray dotted arc shows full-TMB trail that is not in this plan. The map is schematic, not a GPX track.

Schematic map contrasting the proposed run from Les Contamines through Italy to La Fouly and Lac Blanc with omitted full Tour du Mont Blanc sections through Champex, Trient, Col de Balme, Les Houches and Col du Tricot
Swipe the map sideways for detail. The four-day traverse finishes in La Fouly. A vehicle returns us directly to Chamonix, deliberately skipping the northern and western full-loop arc. Day 5 restores a small taste of the Aiguilles Rouges side with Lac Blanc via Flégère.

What the ≈100-mile circuit adds

The northern and western arc.

  • La Fouly → Champex: the lower Swiss Val Ferret and lakeside village.
  • Champex → Trient: Bovine’s balcony or the harder Fenêtre d’Arpette variant.
  • Trient → Chamonix: Col de Balme, Posettes and the approach along the Aiguilles Rouges.
  • Les Houches → Les Contamines: Col du Tricot beneath the Bionnassay Glacier.

What we still keep: all three countries, Bonhomme, Col de la Seigne, the Italian balcony and Grand Col Ferret, followed by a separate Lac Blanc finale. What we give up is the continuous circle and roughly 35–43 net miles versus the published ≈99-mile version; exact mileage depends on the final variants.

The preliminary stage plan.

These are planning targets, not measured courses. Exact start points and route variants must be reconciled into one verified GPX set before anyone books.

  1. 01
    France · Les Contamines → Les Chapieux

    Over the Bonhomme.

    Target: 15–17 mi · +5,000–6,000 ft · 5–7 hr

    Climb through Notre-Dame de la Gorge toward Col du Bonhomme and Croix du Bonhomme, then descend into the Vallée des Glaciers. The exact start point is one of the details that will determine whether the day lands inside the mileage target.

  2. 02
    France → Italy · Les Chapieux → Courmayeur

    Cross the Col de la Seigne.

    Target: 14–16 mi · +4,500–5,500 ft · 5–7 hr

    Run into Italy beneath the Mont Blanc massif, with a planned start adjustment or short vehicle assist if needed to keep the overall trip near 64 miles. Finish in Courmayeur with a real shower, dinner and a private-room option.

  3. 03
    Italy · Courmayeur → Rifugio Bonatti

    The short day with the biggest view.

    Target: 9–10 mi · +3,500–4,500 ft · 3½–5 hr

    Climb out of Courmayeur and traverse the Italian side toward Val Ferret. A shorter mileage day leaves time to settle into Rifugio Bonatti, eat well and watch the light move across the Grandes Jorasses.

  4. 04
    Italy → Switzerland · Bonatti → La Fouly

    One last border, then wheels.

    Target: 13–14 mi · +3,000–4,000 ft · 4½–6½ hr

    Pass through the upper Val Ferret, cross Grand Col Ferret and descend to La Fouly. The non-negotiable logistics piece is a direct vehicle pickup immediately after the run, returning the group to the same Chamonix hotel that afternoon rather than adding another overnight on the trail.

  5. 05
    France · Flégère → Lac Blanc

    Finish high above Chamonix.

    Target: 5–7 mi · +2,000–3,000 ft · 3–4½ hr

    Use the Flégère lift to start high, then link a Lac Blanc and Lacs des Chéserys route before descending by lift. This is the celebratory day, but still rocky alpine terrain. Lift dates, hours and the final route must be checked for August 2027.

Working total: about 56–64 miles. The daily ranges add to that planning window, but only a measured GPX can confirm that the chosen variants connect cleanly; a short start transfer on Day 2 may still be useful.

Four trail stops, one Chamonix base.

These are sensible accommodation targets, not holds. Room type, meal plan, luggage access and cancellation terms need written confirmation.

Before Day 1 · optional

Les Contamines

Chalet Hôtel La Chemenaz ↗

A practical pre-start example if the group wants to sleep at the trailhead rather than transfer from Chamonix that morning.

Night 1 · France

Les Chapieux

Auberge de la Nova ↗

The obvious location target. Availability, room format, bathrooms, meals and luggage access are all unconfirmed.

Night 2 · Italy

Courmayeur

Hotel Croux or similar ↗

A private-room hotel night with laundry and bag access would reset the group before the hut stage.

Night 3 · Italy

Rifugio Bonatti

Rifugio Walter Bonatti ↗

The signature mountain night. Private rooms and bathroom arrangements cannot be assumed; booking pressure may dictate the whole itinerary.

Nights 4 & 5 · France

Chamonix

One hotel for both Chamonix nights ↗

Night 4 follows the La Fouly transfer; Night 5 follows Lac Blanc. Arrange luggage storage with the hotel before Day 1. Any pre-start Chamonix or Les Contamines room is extra.

Weather backup · Switzerland

La Fouly

Emergency overnight options ↗

Not part of the plan, but a late finish or closed pass needs a safe fallback rather than a forced nighttime transfer.

Rifugio Walter Bonatti on a green alpine slope
Rifugio Walter Bonatti · Cboon · CC BY-SA 3.0 · resized

One refuge, deliberately.

The plan keeps the high-mountain atmosphere without making every night a dormitory gamble. Bonatti is the exception because its location is part of the experience, not just somewhere to sleep.

That also makes it the first availability check. If Bonatti cannot work for the group’s dates and room requirements, the route needs to change before anything else is booked.

€1,200–€1,900 per person, land only.

A deliberately broad range for August 2027. It is not a quote and should not be used to collect money yet.

€550–€850

Lodging & selected meals

Trail nights plus two Chamonix nights, assuming some half-board and some hotel meals.

€350–€550

Transfers, bags & coordination

Start logistics, luggage movement and the critical private La Fouly–Chamonix transfer.

€150–€250

Lifts, lunches & trail food

Flégère access, food outside half-board and ordinary on-route expenses.

€150–€250

Contingency

Room upgrades, weather changes, taxi gaps and 2027 price movement.

International airfare, travel insurance, personal gear and extra pre/post-trip nights are outside this range.

Supported self-guided is the promising middle.

Runcation appears open to flexible self-guided coordination based on our Dolomites conversation, so it is the first operator worth asking about this exact shape. That is potential, not confirmation: they have not agreed to this Mont Blanc route, price or August 2027 dates.

Altitude Montblanc offers fixed 5-, 6- and 7-day trail-running options, but directly declined a tailor-made itinerary because accommodation along the route is difficult to secure.

The useful next inquiry

Send Runcation the date window, group size, room/bathroom requirements, this five-day shape and the direct Day 4 transfer requirement. Ask for a feasibility check before asking for a detailed quote.

Turquoise Lac Blanc among granite rocks in Chamonix

Lac Blanc

A high, bright last morning above Chamonix. If the four-day traverse is the journey, this is the toast.

Photo: Tiia Monto · CC BY-SA 3.0 · resized ↗

What is still unknown

Exact GPX tracks, measured distance and climbing for all five stages.

August 2027 lodging, private-room and bathroom availability.

Operator willingness, support scope, luggage plan and emergency coverage.

Transfer timing from La Fouly and lift operations at Flégère.

2027 prices, deposits, cancellation terms and final per-person total.

Weather, trail closures and each runner’s readiness near departure.

This page is an inspirational proposal, not a booked trip or a safety plan. Alpine routes change with weather, snow, closures and group condition. Verify every figure and route with the chosen operator, current maps and local guidance.

Back to Bask in Nature ↗