Marathon du Mont-Blanc

90km du Mont-Blanc

Friday, June 26, 2026 at 4:00 AM · Chamonix

89.1 KM
Distance
7,050 M D+
Elevation Gain
7,050 M D-
Elevation Loss
Route
Profile

TERRAIN — 45°55′N · 6°52′E

Under your feet

Surface

Way type

TrailSight+

Unlock the full picture of this course

Get the climbs, the descents, the effort split, the longest stretch without aid — every metric a trail runner needs to plan a race.

  • Top climbs, average and max gradients
  • Longest and steepest descents
  • Effort split by thirds and hardest km
  • Longest stretch without aid and spacing stats
  • Runnable sections and terrain mix
TrailSight+

Build your race plan with the roadbook

Set a target time or a cut-off margin and get the passage time at every checkpoint, with adjustable aid-station stops and shareable links.

  • Target finish time or margin on every cut-off
  • Aware of every aid station's cut-off
  • Pace adjusted by slope and fatigue
  • Editable pause per aid station
  • Shareable link for crew & pacers
Segments

Chamonix

Fri 04:00
Fri 04:00
Distance 0.0 km
Altitude 1,095 m
D+ 0 m
D- 0 m
12.8 km 1451 m 503 m

PlanPraz

Distance 12.8 km
Altitude 2,048 m
D+ 1451 m
D- 503 m
5.2 km 129 m 266 m

Flégère

Distance 18.0 km
Altitude 1,911 m
D+ 1589 m
D- 773 m
9.3 km 383 m 902 m

Buet

Distance 27.3 km
Altitude 1,392 m
D+ 1973 m
D- 1676 m
10.1 km 800 m 873 m

La Villaz

Distance 37.4 km
Altitude 1,319 m
D+ 2773 m
D- 2549 m
5.0 km 739 m 69 m

Emosson

Distance 42.4 km
Altitude 1,989 m
D+ 3536 m
D- 2642 m
4.0 km 146 m 965 m

Chatelard

Distance 46.4 km
Altitude 1,172 m
D+ 3682 m
D- 3607 m
3.3 km 478 m 0 m

Telesiege Belle Place

Distance 49.7 km
Altitude 1,650 m
D+ 4168 m
D- 3613 m
10.9 km 901 m 1043 m

Le Tour

Distance 60.6 km
Altitude 1,510 m
D+ 5069 m
D- 4656 m
10.1 km 299 m 684 m

Les Bois

Distance 70.7 km
Altitude 1,125 m
D+ 5368 m
D- 5338 m
5.3 km 904 m 120 m

Montenvers

Distance 76.0 km
Altitude 1,906 m
D+ 6272 m
D- 5458 m
5.8 km 448 m 143 m

Refuge Plan Aiguille

Distance 81.8 km
Altitude 2,211 m
D+ 6717 m
D- 5601 m
7.3 km 327 m 1433 m

Chamonix

Distance 89.1 km
Altitude 1,105 m
D+ 7050 m
D- 7040 m

Heading to this race?

Get the GPX track, elevation profile and aid stations on your watch.

Login required

Log in to access this feature.

  Login
TrailSight+

Unlock GPX Export

Get the full GPX track with waypoints, aid stations and elevation data.

  Get TrailSight+

€4.99/month

Get this GPX track

Buy permanent access to this race's GPX track and waypoints.

or
  Get unlimited with TrailSight+

Export

90km du Mont-Blanc