The first section of the GR5 in Switzerland. The route takes you from the ferry terminal in Nyon up the the train station in la Cure. Beginning with a flat section before it reaches the Jura mountains, then ascending for a period, before flattening out after St-Cerge. The finish is at the train station in la Cure which means an easy 50 minute train back to Nyon.

The Nyon to St-Cergue section is described below

"By using the ancient Roman roads, it is possible to connect St-Cergue to Nyon via Trélex. This path is also part of the GR5 hike trail.