{
  "name": "Tal-y-llyn Pass",
  "slug": "tal-y-llyn-pass-a487",
  "url": "https://www.bestdrivingroads.com/roads/tal-y-llyn-pass-a487/",
  "summary": "Bwlch Llyn Bach pass under Cadair Idris from Cross Foxes to Tal-y-llyn lake.",
  "roadNumbers": [
    "A487"
  ],
  "location": {
    "country": "United Kingdom",
    "region": "Gwynedd / Eryri (Snowdonia)",
    "start": {
      "name": "Cross Foxes",
      "lat": 52.734208,
      "lon": -3.828236
    },
    "end": {
      "name": "Tal-y-llyn",
      "lat": 52.667791,
      "lon": -3.867813
    }
  },
  "measurements": {
    "lengthMiles": 5.5,
    "lengthKm": 8.9,
    "driveMinutes": 11,
    "corners": 18,
    "hairpins": 0,
    "maxGradientPercent": 12,
    "summitMetres": 295.9,
    "elevationConfidence": "measured",
    "difficulty": "moderate",
    "tightnessOutOf10": 5
  },
  "timing": {
    "bestSeasons": [
      "spring",
      "summer",
      "autumn"
    ]
  },
  "conditions": {},
  "hazards": [
    "Fast oncoming traffic",
    "Mach Loop parked cars",
    "Mountain crosswinds"
  ],
  "scenery": [
    "mountain",
    "lakes",
    "valley"
  ],
  "pointsOfInterest": [
    "Mach Loop",
    "Gwanas-Fawr Roman Marching Camp",
    "Waun Llefenni"
  ],
  "geometry": {
    "pointCount": 40
  },
  "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"
}