{
  "name": "Milltir Cerrig",
  "slug": "milltir-cerrig-b4391",
  "url": "https://www.bestdrivingroads.com/roads/milltir-cerrig-b4391/",
  "summary": "Lonely B-road crossing of the Berwyn range between Bala and Llangynog.",
  "roadNumbers": [
    "B4391"
  ],
  "location": {
    "country": "United Kingdom",
    "region": "Gwynedd / Powys (Berwyn)",
    "start": {
      "name": "Bala",
      "lat": 52.907395,
      "lon": -3.516838
    },
    "end": {
      "name": "Llangynog",
      "lat": 52.822236,
      "lon": -3.401388
    }
  },
  "measurements": {
    "lengthMiles": 8.4,
    "lengthKm": 13.5,
    "driveMinutes": 17,
    "corners": 24,
    "hairpins": 0,
    "maxGradientPercent": 14,
    "summitMetres": 489.5,
    "elevationConfidence": "measured",
    "difficulty": "moderate",
    "tightnessOutOf10": 5
  },
  "timing": {
    "bestSeasons": [
      "spring",
      "summer",
      "autumn"
    ]
  },
  "conditions": {},
  "hazards": [
    "Straying sheep",
    "Steep Tanat descent",
    "Summit fog"
  ],
  "scenery": [
    "moorland",
    "mountain",
    "valley"
  ],
  "pointsOfInterest": [
    "Bryniau Gleision",
    "Milltir Gerrig",
    "Moel Heulog"
  ],
  "geometry": {
    "pointCount": 85
  },
  "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"
}