Sources reviewed
Official sources: 2 · sources with a recorded review date: 2. Updates from the organiser always take precedence.
Latest recorded check: 16 September 2026.
Marathon du Mont-Blanc 2026
42 km du Mont-Blanc
43 kmDistance
2,540 mElevation
Organised by Club des Sports de Chamonix
GPX
Official route and elevation profile
No official GPX available
The organiser has not published a usable GPX file for this page. No third-party route is used.
Route reference
Prepare the 42 km du Mont-Blanc route
The 42 km du Mont-Blanc 2026 page brings together published data for this running route.
The route is listed from Chamonix-Mont-Blanc, France to Chamonix-Mont-Blanc, France, with 42.8 km and 2,540 m D+ on the page.
Listed organiser: Club des Sports de Chamonix.
- Start / area
- Chamonix-Mont-Blanc, France
- Finish
- Chamonix-Mont-Blanc, France
- Edition
- 2026
- Distance
- 42.8 km
- Elevation gain
- 2,540 m D+
Frequently asked questions
Is the 42 km du Mont-Blanc GPX available?
No verified GPX file is associated with this page. Trailboard does not substitute a third-party track.
Do these details replace the organiser's instructions?
No. This page makes sources easier to consult and separates published data from GPX calculations. Check the latest official instructions before the start.
Check the information
Sources and provenance
These links point to the documents used. The organiser's instructions remain authoritative if they change.
- Programme officiel Marathon du Mont-Blanc 2026OfficialOpen source
- Roadbook officiel Marathon du Mont-Blanc 2026OfficialOpen source