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Mont-Blanc Marathon 42K 2026 Calculate your finish.

42 km of Mont Blanc with 2,540 meters of elevation gain, the 42km Mont-Blanc race is the highlight of the weekend. GTWS Golden Trail World Series 2025

Distance
43.1 km
Elevation
2,540 m+
Date
28 Jun 2026
Checkpoints
3
Cutoff
10:00
1 Runner data
2 Predictions

STEP 1 OF 2 · RUNNER PROFILE

Tell us how you have been training

Use your weekly averages from the last eight weeks. Approximate values are fine—you can edit them later.

Used only to label your prediction profile.
km / week
:
Minutes Seconds
m+ / week
1 - Beginner 5 - Very experienced

Selected course

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S F
Runner Checkpoint Route slope Downhill Uphill
Distance -
Elevation -
Estimated finish -
Race time 00:00:00
Current position 0 km · 0 m+
Race cutoff -

Live timeline

Predicted checkpoint passes

100%
Elevation profile unavailable

SPLITS

This table shows how long it takes to cover each kilometer.

KM Grade Gain Pace Total
Select a GPX course to calculate kilometer splits.

Preparing your prediction

Your runner profile is being analysed.