{
  "name": "Lassen Park Highway",
  "slug": "lassen-park-highway",
  "url": "https://www.bestdrivingroads.com/roads/lassen-park-highway/",
  "summary": "A volcanic high road past steaming fumaroles and a lava peak.",
  "roadNumbers": [
    "CA 89"
  ],
  "location": {
    "country": "United States",
    "region": "California",
    "start": {
      "name": "Mineral",
      "lat": 40.437205,
      "lon": -121.5339
    },
    "end": {
      "name": "Manzanita Lake",
      "lat": 40.519784,
      "lon": -121.470223
    }
  },
  "measurements": {
    "lengthMiles": 18.9,
    "lengthKm": 30.4,
    "driveMinutes": 38,
    "corners": 32,
    "hairpins": 1,
    "maxGradientPercent": 7,
    "summitMetres": 2594.9,
    "elevationConfidence": "measured",
    "difficulty": "moderate",
    "tightnessOutOf10": 5
  },
  "timing": {
    "bestSeasons": [
      "summer",
      "autumn"
    ]
  },
  "conditions": {},
  "hazards": [
    "Late-lying snow at altitude",
    "Stopping sightseers",
    "Sudden mountain weather"
  ],
  "scenery": [
    "mountain",
    "forest"
  ],
  "pointsOfInterest": [
    "Emigrant Pass",
    "Sulphur Works",
    "Upper Cascades Viewpoint"
  ],
  "geometry": {
    "pointCount": 277
  },
  "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"
}