The Cycle route
The Avenue Verte London - Paris is a cycle route stretching 406 km. The French section, linking Paris to the Channel port of Dieppe, measures 246 km. It follows special traffic-free greenways (voies vertes), plus some tracks shared with motorists.
The French section of the route crosses eight départements (French counties): Paris, Seine-Saint-Denis, Hauts-de-Seine, Yvelines, Eure, Val d’Oise, Oise and Seine-Maritime. To get from Saint-Germer-de-Fly (in Oise) to Conflans-Ste-Honorine (in Yvelines), you have to choose between two options, either going via the Oise Valley (312 km in total), or via the Vexin region and the Epte Valley (246 km in total).
The Channel crossing connecting between the French and English sections of the Avenue Verte London <> Paris is between Newhaven and Dieppe.
The British part of the route uses the National Cycle Network, in particular routes 2, 21 and 20. The website of the cycling organisation Sustrans offers a very detailed map of the route, along with an app: www.sustrans.org.uk
The French part of the Avenue Verte uses the French National Cycle Network and follows special traffic-free greenways (voies vertes), plus some tracks shared with motorists.