{
  "name": "Gorges de la Bourne",
  "slug": "gorges-de-la-bourne",
  "url": "https://www.bestdrivingroads.com/roads/gorges-de-la-bourne/",
  "summary": "A 19th-century balcony road carved into the cliffs of the Vercors gorges.",
  "roadNumbers": [
    "D531"
  ],
  "location": {
    "country": "France",
    "region": "Isère",
    "start": {
      "name": "Pont-en-Royans",
      "lat": 45.062369,
      "lon": 5.342436
    },
    "end": {
      "name": "Villard-de-Lans",
      "lat": 45.070686,
      "lon": 5.551118
    }
  },
  "measurements": {
    "lengthMiles": 15.2,
    "lengthKm": 24.5,
    "driveMinutes": 34,
    "corners": 60,
    "hairpins": 0,
    "maxGradientPercent": 9,
    "summitMetres": 1025.9,
    "elevationConfidence": "approximate (30 m DEM cannot resolve this line)",
    "difficulty": "demanding",
    "tightnessOutOf10": 7
  },
  "timing": {
    "bestSeasons": [
      "spring",
      "summer",
      "autumn"
    ]
  },
  "conditions": {},
  "hazards": [
    "Low rock overhangs",
    "Unlit narrow tunnels",
    "Rockfall onto the carriageway"
  ],
  "scenery": [
    "gorge",
    "valley",
    "forest"
  ],
  "pointsOfInterest": [
    "Les Maisons suspendues",
    "Monument aux Jeux olympiques d'hiver de 1968",
    "Belvedere du Ranc"
  ],
  "geometry": {
    "pointCount": 224
  },
  "attribution": {
    "source": "Routes - bestdrivingroads.com",
    "citation": "Cite with a link to the road page. Stats are measured from the mapped line, not copied from other lists; where elevationConfidence is \"approximate\" the 30 m DEM cannot resolve that line and the elevation figures are indicative.",
    "roadGeometry": "(c) OpenStreetMap contributors, ODbL",
    "terms": "Facts are free to cite with attribution; bulk reproduction of the catalogue requires permission (simon@keane.studio)."
  },
  "updated": "2026-07-25"
}