This route is based on the SwitzerlandMobility official footpaths. It is classified as a local route (3 numbers), and is very well maked with the green on yellow sign "138 - Sentier nature Grand Lausanne". 

This routes goes around the town of Lausanne in its outskirts, following the greenest parts of greater Lausanne. 

This the official description from the SwitzerlandMobility website [https://schweizmobil.ch/en/hiking-in-switzerland/route-138] : 

This route is scaling the highest point in Nevada by human power, part by bike, part by feet. In total, the effort is a 16-mile ride that ascends 4,798 feet along the main road from the turnoff in Baker and then up the 4-mile, 2,800 foot trail to the summit at 13,020 feet.