The Trailhead is located near the Parador hotel in the Cañadas del Teide. It can be reached by car from virtually all sides of the Island. From the south there is a road from the airport via Villaflor to the Cañadas, from the West you must head for Chio either from Playa de las Americas or from Santiago del Teide. The northern road starts from Puerto de la Cruz and the eastern ascent starts from the capital Santa Cruz del Tenerife and crosses the mountain range Cumbre Dorsal.
Alternatively you can take the bus either from Playa de las Americas (Line 342) or from Puerto de la Cruz (Line 348). Both buses depart at about 9:00 a.m., the return buses go around 4:00 p.m.
Altitude gain: 750m
Trailhead: Parking lot south of the Parador Hotel
This route first runs along a gravel road below the north face of Guajara and then turns steeply upwards into the pass Degollada de Guajara between Guajara and Montaña Passaron. It's a simple hike - the only problems could be heat and dehydration.
From Parador hotel head back to the main road TF21 and go southward for some 100m. There turn into a gravel road which is blocked some 15min further on. Go on along the gravel road wich winds upwards around the Piedras Amarillas which are a rock climbing destination in themselves.
After one hour of easy hike and after you have come to the end of the Guajara north wall the path to Degollada de Guajara starts right of the gravel road. The trail is marked with gray marks and leads directly up to the pass at 2372m. There is a trail crossing on top of the pass. Head directly on- and downwards (white marks).
At a barrier turn to the right and head through the gorse bushes upwards. After 45min you'll get to the broad summit ridge (rather a plain)
Just hiking gear and a lot of water, especially in summer. Don't forget sunscreen and -glasses. The occasional cap/hat might come in useful.