{
  "name": "Passo San Boldo",
  "slug": "passo-san-boldo",
  "url": "https://www.bestdrivingroads.com/roads/passo-san-boldo/",
  "summary": "A tiny pass of stacked hairpins built through the rock in 1918.",
  "roadNumbers": [
    "SP635"
  ],
  "location": {
    "country": "Italy",
    "region": "Veneto",
    "start": {
      "name": "Borgo Valbelluna",
      "lat": 46.054139,
      "lon": 12.144106
    },
    "end": {
      "name": "Cison di Valmarino",
      "lat": 45.992123,
      "lon": 12.172487
    }
  },
  "measurements": {
    "lengthMiles": 7,
    "lengthKm": 11.3,
    "driveMinutes": 17,
    "corners": 18,
    "hairpins": 15,
    "maxGradientPercent": 12,
    "summitMetres": 725.5,
    "elevationConfidence": "approximate (30 m DEM cannot resolve this line)",
    "difficulty": "demanding",
    "tightnessOutOf10": 9
  },
  "timing": {
    "bestSeasons": [
      "spring",
      "summer",
      "autumn"
    ]
  },
  "conditions": {},
  "hazards": [
    "Single-lane tunnels with traffic control",
    "Very tight hairpins",
    "Oncoming traffic"
  ],
  "scenery": [
    "mountain",
    "forest"
  ],
  "pointsOfInterest": [
    "Passo San Boldo",
    "Punta Signa"
  ],
  "geometry": {
    "pointCount": 123
  },
  "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"
}