{
  "name": "Glenn Highway",
  "slug": "glenn-highway",
  "url": "https://www.bestdrivingroads.com/roads/glenn-highway/",
  "summary": "Palmer to Glennallen past the hanging Matanuska Glacier.",
  "roadNumbers": [
    "AK 1"
  ],
  "location": {
    "country": "United States",
    "region": "Matanuska Valley, Alaska",
    "start": {
      "name": "Palmer",
      "lat": 61.60188,
      "lon": -149.121688
    },
    "end": {
      "name": "Glennallen",
      "lat": 62.108574,
      "lon": -145.541229
    }
  },
  "measurements": {
    "lengthMiles": 136.8,
    "lengthKm": 220.2,
    "driveMinutes": 175,
    "corners": 55,
    "hairpins": 0,
    "maxGradientPercent": 7,
    "summitMetres": 1030,
    "difficulty": "moderate",
    "tightnessOutOf10": 3
  },
  "timing": {
    "bestSeasons": [
      "summer"
    ]
  },
  "conditions": {},
  "hazards": [
    "Moose crossings, worst in winter darkness",
    "Frost heaves and ice near Eureka Summit",
    "Roadhouse-only services for long stretches",
    "Summer resurfacing with pilot-car delays"
  ],
  "scenery": [
    "mountain",
    "valley",
    "forest"
  ],
  "pointsOfInterest": [
    "Matanuska Glacier viewpoint",
    "Sheep Mountain",
    "Eureka Summit"
  ],
  "geometry": {
    "gpx": "https://www.bestdrivingroads.com/roads/glenn-highway/route.gpx",
    "pointCount": 1244
  },
  "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.",
    "roadGeometry": "(c) OpenStreetMap contributors, ODbL",
    "terms": "Facts are free to cite with attribution; bulk reproduction of the catalogue requires permission (simon@keane.studio)."
  },
  "updated": "2026-07-12"
}