{
  "name": "Hachimantai Aspite Line",
  "slug": "hachimantai-aspite-line",
  "url": "https://www.bestdrivingroads.com/roads/hachimantai-aspite-line/",
  "summary": "A 27km (about 16.8 mile) volcanic crossing of the Hachimantai plateau between Iwate and Akita, open from the spring Snow Corridor season to the last of the autumn koyo.",
  "roadNumbers": [
    "23"
  ],
  "location": {
    "country": "Japan",
    "region": "Iwate / Akita",
    "start": {
      "name": "Hachimantai (Matsuo)",
      "lat": 39.920976,
      "lon": 140.975996
    },
    "end": {
      "name": "Hachimantai summit area",
      "lat": 39.976815,
      "lon": 140.798567
    }
  },
  "measurements": {
    "lengthMiles": 18,
    "lengthKm": 29,
    "driveMinutes": 34,
    "corners": 60,
    "hairpins": 5,
    "maxGradientPercent": 8,
    "summitMetres": 1575.4,
    "elevationConfidence": "measured",
    "difficulty": "moderate",
    "tightnessOutOf10": 4
  },
  "timing": {
    "bestSeasons": [
      "spring",
      "summer",
      "autumn"
    ],
    "closesInWinter": true
  },
  "conditions": {},
  "hazards": [
    "Seasonal winter closure (Nov to mid Apr)",
    "Sudden fog and low cloud near the summit",
    "Frequent sightseeing buses and stopped cars"
  ],
  "scenery": [
    "mountain",
    "moorland",
    "forest"
  ],
  "pointsOfInterest": [
    "Mikaeri Pass",
    "Mt. Chausu",
    "Hachimantai"
  ],
  "geometry": {
    "pointCount": 284
  },
  "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"
}