Candido, the tour guide, was super friendly and caring about the group walk pace. He also gave us interesting information about the flora and fauna and traditional activity in the Canyon. The hike shouldn't be underestimated especially the downhill which could be very challenging for the knees. I would recommend to bring some sticks and to go by bus, cause the main road was busy and narrow.
Climb over 3500 metres with this Teide Day Trip which includes entry to the cable car and pick up from different points in North Tenerife.