MZS22 - a 22-kilometre race with passage to the summit of the Zerbion - will be the ninth stage of the 23 planned by the circuit, which will involve 16 nations and 4 continents. Start and finish in Châtillon, in the midst of a varied trail with running and vertical passages. A not so high peak, which has however launched several skyrunning champions, such as the testimonials Bruno Brunod, Dennis Brunod and the late Jean Pellissier. The queen race will therefore award points for the Merrell Skyrunner World Series circuit.

A change in the second skyrace, which becomes 14.5 kilometres (1,250 metres D+) and will allow other glimpses of the area to be discovered. It will be a less demanding, but equally spectacular trial, with the turning point at the Cheney alpine pasture, at an altitude of 1,790 metres.

The two verticals are confirmed. The trial of 9.5 kilometres, 2,200 metres of positive height difference with departure from Châtillon and arrival at the top of the Zerbion, was again included in the international calendar VK Open Championships, the same as last year. The 5.5 kilometres (850 metres D+) will once again be open to everyone, including the under-18s and people with disabilities.

In the meantime, the Monte Zerbion organising committee, which has been planning the new edition for several months, is in full swing. The entry in the Merrell Skyrunner World Series circuit is undoubtedly an international showcase, capable of making Châtillon and the Aosta Valley known in the world, but it requires new standards and further implementations with respect to the past, already being studied by a cohesive working group that has built up the right experience in recent years.