{
  "name": "Porlock Hill",
  "slug": "a39-porlock-hill",
  "url": "https://www.bestdrivingroads.com/roads/a39-porlock-hill/",
  "summary": "One of the steepest A-roads in England, climbing from the Somerset coast onto Exmoor in tight hairpins.",
  "roadNumbers": [
    "A39"
  ],
  "location": {
    "country": "United Kingdom",
    "region": "England",
    "start": {
      "name": "Bossington",
      "lat": 51.210564,
      "lon": -3.590931
    },
    "end": {
      "name": "North Devon",
      "lat": 51.229954,
      "lon": -3.829006
    }
  },
  "measurements": {
    "lengthMiles": 11.7,
    "lengthKm": 18.8,
    "driveMinutes": 27,
    "corners": 18,
    "hairpins": 0,
    "maxGradientPercent": 25,
    "summitMetres": 419.7,
    "elevationConfidence": "measured",
    "difficulty": "demanding",
    "tightnessOutOf10": 8
  },
  "timing": {
    "bestSeasons": [
      "spring",
      "summer",
      "autumn"
    ]
  },
  "conditions": {},
  "hazards": [
    "Severe 1-in-4 hairpins",
    "Brake fade on descent",
    "Not for large vehicles"
  ],
  "scenery": [
    "coast",
    "moorland"
  ],
  "pointsOfInterest": [
    "Wind Hill"
  ],
  "geometry": {
    "pointCount": 114
  },
  "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"
}