Located in the southern region of Murcia east of Alicante in Cartagena, the Sierra Espuna mountains are a mountain bikers paradise with excellent tracks, scenery and weather. It is a regional mecca with plenty of gnarly rides. The terrain, tread and climate are similar to Tucson, Arizona -- dry and rocky with altitude between 1,800 feet and 5,000.
Note: In Spain, mountain biking is known as Bici Todo Terrano (BTT) and the forest tracks open to BTT are known as pistas forestales.
Overall, Sierra Espuna Mountains is the 2nd most popular mountain bike trail of all 20 mountain biking rides in Spain.