{
  "name": "Col de l'Iseran",
  "slug": "col-de-liseran",
  "url": "https://www.bestdrivingroads.com/roads/col-de-liseran/",
  "summary": "The highest paved mountain pass in the Alps, at 2,764 m.",
  "roadNumbers": [
    "D902"
  ],
  "location": {
    "country": "France",
    "region": "Auvergne-Rhône-Alpes",
    "start": {
      "name": "La Daille",
      "lat": 45.448812,
      "lon": 6.980402
    },
    "end": {
      "name": "Bonneval-sur-Arc",
      "lat": 45.370544,
      "lon": 7.046905
    }
  },
  "measurements": {
    "lengthMiles": 18.2,
    "lengthKm": 29.3,
    "driveMinutes": 40,
    "corners": 40,
    "hairpins": 11,
    "maxGradientPercent": 9,
    "summitMetres": 2757,
    "elevationConfidence": "measured",
    "difficulty": "demanding",
    "tightnessOutOf10": 7
  },
  "timing": {
    "bestSeasons": [
      "summer"
    ]
  },
  "conditions": {},
  "hazards": [
    "High altitude and thin air",
    "Sudden alpine weather",
    "Cyclists on the climbs"
  ],
  "scenery": [
    "mountain",
    "valley"
  ],
  "pointsOfInterest": [
    "Col de l'Iseran",
    "Tête de l'Arollay",
    "Pierre Blanc dit Le Pape"
  ],
  "geometry": {
    "pointCount": 253
  },
  "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"
}