The (GR240) trek is a 300 km long, beautiful 15 day trek around the Sierra Nevada mountain range in Andalusia.
Sulayr (mountain of the sun) is the Arabic name for the Sierra Nevada. The Sulayr trek is a new itinerary (2007) divided in 19 parts. The trail is marked with red/white signs and has an average altitude of 1800 metres. The trail oftens follows the border of the Parque Natural and Parque Nacional de Sierra Nevada and passes several mountain refugios.
Hikers can spend the night in refugios and villages nearby the trail, but this usually means longer walking distances per day. The only two villages "en route" are Capileira and Trevélez in the Alpujarras. Camping is also possible, but you have to inform the authorities of the Parque Natural.