@mugaboo – search on here, have a good look at the IGN maps (geortail.gouv.fr). BTW Chatel bike park is my favourite in the area, the blues are fun as is the red off the road from the middle station. We usually stay in Morzine or Les Gets so all my “local knowledge” is based around there. I’ve seen some posts on here from STWers who’ve done non park trails in Chatel area and loved them. The trails are just the paths on the maps usually plus some purpose built cheeky tracks usually.
My Swiss mate just told me he has a spare PdS entry so having a quick look although as per the other Alps thread my focus this year is Chamonix/Verbier in September and a hut trip somewhere, would love to ride past/under the north face of the Eiger.