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 — consistently twisty. It runs past mountain peaks, a mountain pass, a river and forest. That is busier than two thirds of the roads we have measured in France, where the median is 26.9 a mile.
Ridden together with D 578a and D 273 it makes about 12 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 578a0 mi away · 303 corners
- D 2734 mi away · 291 corners
- D 2758 mi away · 317 corners
- D 5339 mi away · 444 corners
- D 53412 mi away · 539 corners
- D 53412 mi away · 313 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.