Race pace

Marathon du Mont-Blanc pace calculator

42K · Expected Sun, 27 June 2027 · 43.2 km · 2387 m D+

This distance date is a planning estimate. Pace calculations use the mapped course and do not depend on the schedule.

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Race-day pacing plan

Set a finish target and stopped-time budget, then use the GPX-derived split table for where the course should feel slow or runnable.

Official cutoff
12h 00
Clock pace
8:41 / km
Finish time including stops.
Moving pace
8:20 / km
What your watch needs while moving.
Effort pace
4:49 / km
Uses climb and descent adjusted distance.
Cutoff buffer
+5h 45
At the selected finish target.
Course from GPX
43.2 km
2387 m D+ · 2290 m D-
Adjusted workload
74.7 effort-km
100 m climb = 1 km; 300 m descent = 1 km.
Hardest block
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Split plan will appear below.

Course-aware split plan

Five-kilometer blocks from the GPX, weighted by climb and descent load.

Start 06:45