Bus and Walk - Valle de Arriba, Mt Bilma, Chio Guia de Isora

16 km by bus. 15.3 km walking. Walking: 450 metres ascent and 850 descent.
Catch the 462 bus from Guia de Isora bus station and get off at Valle de Arriba. Head NE, then turn right, east, along Calle San Fernando. My bus reversed into this street to turn round and dropped off here. Turn right, SE, along Calle el Revention. The road ends and footpath begins. Continue SE. The path bends right. Soon after it's heading west of south, turn left, east, then SE. After 40 metres, turn right, SW, and the climb begins. After 90 metres, bare left, SE, and later south. Join the path up from Santiago del Teide and head east and SE. Continue ahead at a crossing path. When the path east ends, ignore the way-marks and turn right, SW, uphill. After 45 metres, turn left, NE, and follow a faint path, wall to your right. This is a bit overgrown but was easily passable (hazard). The path heads east to a huge lava flow with a good path across it. Head roughly east across the rugged lava. The path is the only viable route. At a T junction, turn right, south, across more lava. Keep roughly south for a long time. Later there will be pines on the left. After the pines, at a Y junction keep left, a bit west of due south. Eventually the path bends west and there's a T junction. Go left, south, again. This path meanders but mainly heads south. A path merges from the right, Continue south. Just before Chio, cross the TF-38 and drop down along Paseo de los Indianos. At the TF-82, cross over and head SE along Calle Pino del Aire. Bare left into Calle Evora Franquis, south. Bare left into Calle San Juan. At the church square, turn right, then left down Calle Vizconde. This descends steeply. Soon after the smooth surface ends, turn right, west, and continue down. Follow this farm access road all the way to its end, south then SE. Join the TF-82 for 330 metres and head roughly south. Use the parallel lane to avoid the traffic. In Guia de Isora, head back to the bus station. The map shows a route avoiding the main road and uses a parallel road higher up.