Gymnase municipal, Avenue Charles de Gaulle, 38380 Saint-Laurent-du-Pont


The race starts at midday on Friday the 4th, November, 2022
And then every hour until there is only one left.


Bibs are handed on Friday from 10am – to collect at Saint-Laurent-du-Pont gymnasium before the race starts.


Une médaille DNF (Did Not Finish) pour chacun des abandons,
Chartreuse Jeroboam and the only FINISHER medal for the only winner and finisher (“Last One Standing”).

World challenge

The Chartreuse BackYard is officially QUALIFYING for the final in the USA in Tennessee, the “Big Dog’s Back Yard Ultra”.
Details to be defined.

The route

The route of 6,706 kilometers follows the banks of the Guiers river going and coming back (return trip) from the municipal gymnasium of Saint-Laurent-du-Pont, on a very flat path (20 m of D+), with a beautiful view on Chartreuse summits.

Fuel stops

Each participant gets his personal space in the gymnasium, and can organize his assistance as he wishes.
The organization provides a fuel stop for all runners between each loops and at the finish line (DNF or winner).


Limited to 200 participants !!!
Race price : 79€
Registration authorized from junior category.
Registrations online only, via the link below.