KM Vertical: 1000 meters of thrills
Mont-Blanc Vertical Kilometer
Join us and measure yourself against the 1000m vertical drop of the Chamonix Vertical Kilometer!
This 3.8km race with 1000m of ascent is a race against the clock. Please note this is an alpine race! The end of the course is an aerial via ferrata (not recommended for people with vertigo): steps, cables, pedals, handrails... with a finish at 2000m of altitude. Poles are forbidden due to the technical end.
A time record bonus will be awarded to the 1st man and woman of the race.
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
Number withdrawal
Pick-up of KV race numbers is by appointment only, at the Espace EMC2 on Place du Mont-Blanc (Chamonix):
- Thursday June 26, 2025 from 9am to 9pm,
- Friday June 27, 2025 from 9am to 3pm.
Runners must present photo identification and their race bag, including all mandatory 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 4 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
For runners of the Kilomètre Vertical and 23km du Mont-Blanc, who make a request at the time of registration, the organizer offers to transport their belongings to the race finish in Planpraz. Only one bag per runner can be requested. This will be provided by the organizers at the time of number collection, provided that the runner has requested it at the time of registration.
The organizer declines all responsibility in the event of loss, theft or damage to participants' personal belongings in the bags (it is recommended not to place valuables in the bags). Participants' belongings will be transported to the finish only if they are in the bag provided by the organizer.
In the event of a runner abandoning the race, the bag containing his or her belongings will be returned to Race HQ located at the Club des Sports de Chamonix, 99 avenue de la Plage, 74400 Chamonix, within a minimum of one hour of the abandonment being reported to Race HQ.
No lightening bags are available for the other races of the Mont-Blanc Marathon. It is the responsibility of each runner to make their own arrangements for transporting or storing their belongings.
