Years ago I got a booklet from the tourist office in Playa de la Arena entitled “ Trail guide, Santiago del Teide “ it’s in a ring binder. Published by the Santiago del Teide tourist office. Full details of lots of walks in the area with maps. Could still be available from www.santiagodelteide.org
or via email request from firstname.lastname@example.org
. Done most of the walks now. Guia de Isora council also did one called “ walks in our hills “ probably still available from www.guiadeisora.es
. Since these were published walking has expanded in popularity especially in the a Erjos area. The tourist office at Playa de la Arena is usually well stocked with information about walking in the area. Most are do able using the 325 bus. Worth a visit to the tourist office to get kitted out with the walk info and a Titsa bus time table, get the Todo Tenerife Timetable (green ) not the more limited Tenerife Sur ( yellow ) one. Happy walking.