← Run In Lyon by Harmonie Mutuelle Marathon·3 nights

Chamonix: The Alps in Shoulder Season

A mountain valley town at the base of Mont Blanc, worth the longer journey for runners who allow enough time to check what is actually open before booking anything mountain-specific.

Duration3 nights
TransitRail and coach connections via the Alps, roughly 3-4 hours total from Lyon
DepartsLyon Part-Dieu

After the Run In Lyon Marathon: Chamonix

The Route: Lyon Part-Dieu → Saint-Gervais-les-Bains-Le Fayet → Chamonix → Lyon Part-Dieu Logistics: Rail toward Saint-Gervais-les-Bains-Le Fayet, then the Mont-Blanc Express rack railway on to Chamonix; total journey around 3 to 4 hours depending on connections. Marathon Month: October Duration: 3 nights

Lyon Part-Dieu ──(rail, ~2.5-3 hrs)──> St-Gervais-Le Fayet ──(Mont-Blanc Express, ~40 mins)──> Chamonix
                                                                                                     │
                                Lyon Part-Dieu ◄──(same route in reverse, ~3-4 hrs)─────────────────┘

Chamonix is the longest extension worth considering after Run In Lyon's marathon at Place Bellecour on 4 October, and it needs three nights specifically because the first should be a genuine rest day rather than an immediate assault on the mountain. The valley sits beneath Mont Blanc, reached from Lyon by rail toward Saint-Gervais-les-Bains-Le Fayet and then the narrow-gauge Mont-Blanc Express up into the valley itself, a scenic final leg rather than a functional connection.

Early October sits in a genuine shoulder season here, between the end of summer hiking operations and the start of the winter ski season, and some lift and mountain-attraction schedules reduce or close entirely in this window. Check current operating dates for any specific cable car or mountain attraction directly with the operator before building a fixed itinerary around it; this is the single most important planning step for this particular trip, more so than for any other destination on this list.

Night One: Chamonix (rest day)

Spend the first day at valley level. The town itself, along the Arve river, is flat and easy walking, and the Musée Alpin, covering the valley's mountaineering history, needs nothing more than a level walk from most central hotels.

Nights Two and Three: Chamonix

If it is running in early October, the Aiguille du Midi cable car climbs to nearly 3,800 metres in two stages and gives a close-range view of Mont Blanc without requiring any walking at altitude beyond the viewing platforms themselves; confirm current operating dates before planning around it, since this is exactly the kind of shoulder-season service that can close early. The Mer de Glace, France's largest glacier, is reached by a separate rack railway from Montenvers station just outside town, with a further cable car and stairs down to the ice cave itself when open; the stairs section is a genuine descent and climb back up, worth skipping on tired legs if the alternative viewing platform is available instead.

Where to stay for all three nights: Hôtel Mont-Blanc, in the centre of Chamonix, keeps the town's restaurants and the main lift stations within walking distance. Auberge du Bois Prin, slightly above the town with valley views, suits a quieter stay for anyone prioritising rest over central convenience.

Where to eat: look for a restaurant serving a Savoyard menu, tartiflette, raclette or fondue depending on the kitchen, standard and reliably good across the valley in October regardless of which specific address is chosen, and exactly the kind of food this altitude and season calls for.

Getting Home

Geneva Airport (GVA), just across the Swiss border, is the more practical airport for this leg of the trip, reached from Chamonix by direct coach or a rail-and-coach combination in around an hour. Runners returning to Lyon to fly from there should retrace the outbound route via the Mont-Blanc Express and onward rail, a total journey of around 3 to 4 hours back to Lyon Part-Dieu.