Motorcycle Ride Planner · France
D 578a — Valence to Saint-Étienne
France · measured from OpenStreetMap geometry
D 578a runs 11.7 miles between Valence and Saint-Étienne. We counted 480 corners along it, which works out at 41.2 a mile — corner after corner with no let-up. It runs past mountain peaks, a mountain pass, a river and forest. That is calmer than two thirds of the roads we have measured in France, where the median is 44.4 a mile.
Ridden together with D 533 and D 732 it makes about 23 more miles of the same kind of road.
Worth stopping for
- 1.6 miviewpointCol du Marchand
- 1.8 miviewpointLe Suc de Vent
- 1.8 mihistoricRuine du Château de Mahun
- 2.3 miattractionPont des amis
- 2.8 miviewpointLe Chirat Blanc
Roads near here
- D 53319 mi away · 659 corners
- D 73232 mi away · 444 corners
- D 53633 mi away · 881 corners
- D 58941 mi away · 533 corners
- D 153250 mi away · 57 corners
- D 29051 mi away · 862 corners
How we measured it
Corner counts come from the road's own geometry in OpenStreetMap, not from ratings or votes. Every bend above a threshold of curvature is counted once, so two roads can be compared directly. Nothing here is crowdsourced and nobody paid to appear.