{
  "name": "Cuesta de Miranda",
  "slug": "cuesta-de-miranda-rn40",
  "url": "https://www.bestdrivingroads.com/roads/cuesta-de-miranda-rn40/",
  "summary": "RN 40 follows the Río Miranda into the deep canyon between the Famatina and Sañogasta ranges, then climbs a rebuilt, fully paved corniche to Bordo Atravesado at 2,040 m and drops to Los Tambillos on the Villa Unión side.",
  "roadNumbers": [
    "RN 40"
  ],
  "location": {
    "country": "Argentina",
    "region": "La Rioja",
    "start": {
      "name": "Sañogasta",
      "lat": -29.334325,
      "lon": -67.613909
    },
    "end": {
      "name": "Los Tambillos",
      "lat": -29.418442,
      "lon": -67.809146
    }
  },
  "measurements": {
    "lengthMiles": 19,
    "lengthKm": 30.6,
    "driveMinutes": 38,
    "corners": 90,
    "hairpins": 0,
    "maxGradientPercent": 8,
    "summitMetres": 2077.5,
    "elevationConfidence": "measured",
    "difficulty": "moderate",
    "tightnessOutOf10": 5
  },
  "timing": {
    "bestSeasons": [
      "spring",
      "autumn"
    ]
  },
  "conditions": {},
  "hazards": [
    "Closed at short notice for ice, sleet and fog in winter",
    "Rockfalls after heavy summer rain",
    "Heavy trucks on the long grades",
    "Speed limit mostly 30 km/h"
  ],
  "scenery": [
    "mountain",
    "gorge",
    "desert"
  ],
  "pointsOfInterest": [
    "Miranda",
    "La Pelea",
    "Mirador Cuesta de Miranda",
    "Montañes"
  ],
  "geometry": {
    "pointCount": 279
  },
  "attribution": {
    "source": "bestdrivingroads.com",
    "citation": "Cite with a link to the road page. Stats are measured from the mapped line; 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": "2026-10-11"
}