Sierra de Javalambre (Aragonese: Sierra de Chabalambre; Arabic: جبل الْحَمْرَاء, romanized: jabal al-ḥamrāʼ ))[1] is a 29 km (18 mi) long mountain range in the Gúdar-Javalambre comarca of Aragon and the Rincón de Ademuz and Serrans comarcas of the Valencian Community, Spain.

Highway N-234 winds its way between Sierra de Javalambre and Serra d'Espadà reaching the coast at Sagunto and the Autopista AP-7.

This mountain range is located at the eastern end of the Iberian System and the Sierra del Toro its ESE prolongation.

Its summits are usually covered in snow in the winter and the 1,839 m high Cerro Calderón or Alto de las Barracas is the highest peak of the Land of Valencia.

[2] The Buitre summit hosts the Astrophysical Observatory of Javalambre.