{
  "name": "Passo San Marco",
  "slug": "passo-san-marco",
  "url": "https://www.bestdrivingroads.com/roads/passo-san-marco/",
  "summary": "An old salt road over the Orobie Alps, quiet and high.",
  "roadNumbers": [
    "SS470"
  ],
  "location": {
    "country": "Italy",
    "region": "Lombardy",
    "start": {
      "name": "Mezzoldo",
      "lat": 46.012361,
      "lon": 9.664997
    },
    "end": {
      "name": "Albaredo per San Marco",
      "lat": 46.10301,
      "lon": 9.590649
    }
  },
  "measurements": {
    "lengthMiles": 17.6,
    "lengthKm": 28.3,
    "driveMinutes": 39,
    "corners": 40,
    "hairpins": 21,
    "maxGradientPercent": 10,
    "summitMetres": 1986.7,
    "elevationConfidence": "measured",
    "difficulty": "demanding",
    "tightnessOutOf10": 7
  },
  "timing": {
    "bestSeasons": [
      "summer",
      "autumn"
    ]
  },
  "conditions": {},
  "hazards": [
    "Narrow with a broken surface",
    "No barriers over drops",
    "Fog at the summit"
  ],
  "scenery": [
    "mountain",
    "forest"
  ],
  "pointsOfInterest": [
    "Passo San Marco",
    "Rifugio Cà San Marco",
    "Lago di Valmora"
  ],
  "geometry": {
    "pointCount": 358
  },
  "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"
}