{
  "name": "North Cascades Highway",
  "slug": "north-cascades-highway",
  "url": "https://www.bestdrivingroads.com/roads/north-cascades-highway/",
  "summary": "A wild crossing of the jagged North Cascades.",
  "roadNumbers": [
    "WA 20"
  ],
  "location": {
    "country": "United States",
    "region": "Washington",
    "start": {
      "name": "Marblemount",
      "lat": 48.673927,
      "lon": -121.265948
    },
    "end": {
      "name": "Winthrop",
      "lat": 48.474134,
      "lon": -120.177384
    }
  },
  "measurements": {
    "lengthMiles": 73.3,
    "lengthKm": 118,
    "driveMinutes": 147,
    "corners": 34,
    "hairpins": 0,
    "maxGradientPercent": 7,
    "summitMetres": 1663.3,
    "elevationConfidence": "measured",
    "difficulty": "moderate",
    "tightnessOutOf10": 5
  },
  "timing": {
    "bestSeasons": [
      "summer",
      "autumn"
    ],
    "closesInWinter": true
  },
  "conditions": {},
  "hazards": [
    "Closed by snow much of the year",
    "Long stretches without fuel",
    "Wildlife on the road"
  ],
  "scenery": [
    "mountain",
    "forest",
    "lakes"
  ],
  "pointsOfInterest": [
    "Diablo Lake Overlook",
    "Washington Pass Overlook"
  ],
  "geometry": {
    "pointCount": 511
  },
  "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"
}