A-337 Puerto de la Ragua Mountain Pass Road in Sierra Nevada

The A-337 road is situated in the autonomous community of Andalusia in southern Spain. It traverses the Sierra Nevada mountain range, a prominent natural feature known for its high peaks and diverse landscapes. The road begins near the village of La Calahorra and ascends to the Puerto de la Ragua mountain pass, reaching elevations above 2,000 meters (6,562 feet). The route passes through two national parks: the Geoparque de Granada and the Parque Nacional de Sierra Nevada, both of which protect the unique geology and ecology of the region. The road also runs alongside the Río de Laroles for a portion of its length. An interactive map showing the road can be found at the end of this article.

The A-337 extends approximately 39 kilometers (24 miles) and features an asphalt surface of very good quality, rated 4.8 out of 5. The road is moderately curvy, providing a riding experience that balances technical turns with stretches of more straightforward riding. Most of the road (about 73%) consists of two lanes, with a smaller portion (around 13%) reduced to a single lane. The width of the road is predominantly wide (about 81%), with some sections of medium width (17%). The speed limits vary between 30 km/h (19 mph) and 60 km/h (37 mph), reflecting the road's mountainous terrain and safety considerations. Approximately 14% of the route passes through inhabited areas, mainly small settlements and villages.

The defining feature of this route is the Puerto de la Ragua mountain pass, which the road crosses at elevations of approximately 2,040 to 2,044 meters (6,693 to 6,709 feet). This pass is a key point for riders seeking high-altitude mountain roads in Spain. Along the route, there are multiple viewpoints offering expansive views of the surrounding Sierra Nevada landscape. The road's passage through the Geoparque de Granada and the Parque Nacional de Sierra Nevada provides opportunities to experience protected natural environments and geological formations. More information about these parks can be found on the Geoparque de Granada and Parque Nacional de Sierra Nevada websites.

Given the high elevation of the Puerto de la Ragua pass, the A-337 is subject to seasonal weather conditions that may affect accessibility. The road is typically closed or restricted during winter months due to snow and ice, which can pose hazards for motorcyclists. Riders should verify current road conditions before planning a trip, especially in colder seasons. There are no known tolls or entrance fees associated with this road, but conditions may change, and riders are advised to consult official Spanish road and transport authorities for the latest information.

The A-337 road offers motorcyclists a well-maintained mountain pass route through the Sierra Nevada, combining moderate curviness with high-altitude riding and access to protected natural parks. Its passage through the Puerto de la Ragua pass and alongside the Río de Laroles adds to the route's appeal. Riders can enjoy multiple viewpoints and the natural beauty of Andalusia's mountainous terrain. For further details and planning, the national park websites and local resources provide valuable information. An interactive map of the route is included below for reference.