KM Vertical: 1000 meters of thrills

KM vertical
Logo Kilomètre vertical

KM Vertical du Mont-Blanc

Come and measure yourself against the 1000m vertical drop of the Kilomètre Vertical de Chamonix!

This 3.8km race with 1000m of ascent is a race against the clock. Note that this is an alpine race! The end of the course is aerial and via ferrata-like (not recommended for people with vertigo): steps, cables, pedals, handrails... with a finish at 2000m altitude. Poles are forbidden due to the technical nature of the finish.

A time record bonus will be awarded to the 1st man and woman in the KM Vertical.

départ KMV 2023
Logo Marathon du Mont-Blanc

Race info

3.8km short trail, time trial format.

1000m D+.

Open to juniors and above

Limited to 700 runners

First start at 4pm, then a start every 15 seconds.

Finish in Planpraz

1 finish refreshment station

Sticks prohibited

Interactive map
pdf map

Number withdrawal

Pick-up of KV race numbers is by appointment only, at the Espace EMC2 on Place du Mont-Blanc (Chamonix):

  • Thursday June 25, 2026 from 9am to 9pm,
  • Friday June 26, 2026 from 9am to 3pm.

Runners must present photo identification and their race bag, which must include all compulsory equipment, for equipment checks.

No bibs will be issued to runners without their compulsory equipment and identity papers. No race numbers will be issued after 3 p.m. on Friday.

Compulsory equipment

  • Cell phone in working order.
  • Minimum 0.50-liter water supply.
  • Tumbler.

Recommended equipment

  • Waterproof jacket (Gore-tex type).

The organizers would like to draw runners' attention to the fact that, depending on the systems and settings used, GPX tracks may give different results for race distances and gradients.

Runner bags

Kilomètre vertical
Kilomètre vertical
Départ KV 2024
Kilomètre vertical

Relive past editions of the KM vertical