{
  "name": "The Duke's Pass",
  "slug": "a821-dukes-pass",
  "url": "https://www.bestdrivingroads.com/roads/a821-dukes-pass/",
  "summary": "A twisting climb through the Trossachs between Aberfoyle and Callander.",
  "roadNumbers": [
    "A821"
  ],
  "location": {
    "country": "United Kingdom",
    "region": "Scotland",
    "start": {
      "name": "Aberfoyle",
      "lat": 56.176958,
      "lon": -4.377352
    },
    "end": {
      "name": "Callander",
      "lat": 56.242214,
      "lon": -4.24641
    }
  },
  "measurements": {
    "lengthMiles": 13,
    "lengthKm": 20.9,
    "driveMinutes": 27,
    "corners": 20,
    "hairpins": 2,
    "maxGradientPercent": 10,
    "summitMetres": 257.6,
    "elevationConfidence": "measured",
    "difficulty": "moderate",
    "tightnessOutOf10": 6
  },
  "timing": {
    "bestSeasons": [
      "spring",
      "summer",
      "autumn"
    ]
  },
  "conditions": {},
  "hazards": [
    "Narrow with tight bends",
    "Heavy visitor traffic",
    "Forestry vehicles"
  ],
  "scenery": [
    "forest",
    "lakes"
  ],
  "pointsOfInterest": [
    "Womens Timber Corps Memorial",
    "Bicycle Tree"
  ],
  "geometry": {
    "pointCount": 167
  },
  "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"
}