Mont Blanc under cloud at first light

Victoria Stansfield  •  28 August 2026

La Dame
Blanche

Tour du Mont Blanc → UTMB · Chamonix, France

They call Mont Blanc La Dame Blanche. The White Lady.

In French folklore the Dames Blanches stand at the crossings, the fords and the ravines and the narrow bridges, and they ask something of you before they let you through. Fall short and you do not pass.

I set out to ride the Tour du Mont Blanc and start UTMB on the same day. The Dames Blanches asked some serious questions. The films below are how it went.

Watch the films

The films

Three films.
The whole story.

I filmed all of it, the night ride, the transition, the race, and everything that went wrong. All three parts are out now.

  1. I Cycled 330km Through the Night to Reach the Start Line of UTMB
    Part 1

    I Cycled 330km Through the Night to Reach the Start Line of UTMB

  2. Finding My Breaking Point at UTMB
    Part 2

    Finding My Breaking Point at UTMB

  3. I Attempted Something No One Has Ever Done.
    Part 3

    I Attempted Something No One Has Ever Done.

Now the shape of it.Scroll down for the route

Follow it live

La Dame Blanche, part one · the ride

I rode through the night.

2 471 m 2 187 m 1 968 m

To the start of UTMB

331km, 8,301m of climbing, 13hrs 57 on the road.

La Dame Blanche, part two · the run

Another night, the head is good.

28 km not run 143 km

The legs are failing

I stopped at a hundred and forty-three kilometres, with twenty-eight still to run. It is here because it happened, not because it went well.

Live tracking

This page becomes the live map when I roll out at 01:30 on Friday 28 August.

  • Where I am on the route, updated as I go
  • Time elapsed since I left Chamonix
  • How far through the climbing I am, and when I should reach the next checkpoint

Until roll-out —

Nothing to sign up for. Come back to this page on the day, or follow along on Instagram.

Follow on Instagram

Now the part that made it possible.Scroll down for the fuelling

Supported by Nduranz

The fuel for fifty hours

Every hour, for two days, fuel was critical to keep me moving.

An Nduranz NRGY Gel 45, lemon

01:30 Fri 17:45 · UTMB gun Sun

  • On the bike, 90–100g an hour
  • The reset, 60g an hour
  • UTMB, 50–60g an hour
  • The graph shows the planned intake each hour throughout the challenge.

Over the course of forty-nine hours it looked like

Carbohydrate 3,950g
Calories 15,800
Water 15litres