Exiting the Saint-Gervais-le-Fayet station, the railway successivement crosses to waterways: Bon-Nant and then Arve. A relatively large set of normal gauge sidings is located between them. After river Arve, the railway heads to Chedde in mostly a straight line.
Until 2011, the track to Chedde was double gauge: it could accommodate standard gauge freight trains servicing a large chemical plant in Chedde. These services stopped in the early 1990s.