Eurovelo? Not France specific but I seem to recall it had a similar facility.
cheers for response - no, I don't think so -they only have a couple of primary routes. I'm sure the one I saw was far more like Sustrans site but for France, so many different cycle paths etc noted.
@owl started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Eurovelo? Not France specific but I seem to recall it had a similar facility.