This particular ascent of Monte Groba from Boneval, can only be tackled vi Vilachán. Boneval is a small village on the Sierra de Groba, and it sits almost 300m from sea level.
The bridge that crosses the Tamuxe river marks the start of the climb, and straight into a short sharp 10% gradient through the village. The road then flattens, and dips slightly, down to the intersection with the EP-2202 at O Viso. This road is a typical mountain road in this section, but relatively traffic free. The gradient again bites to 10% for almost 2km through the village of Torroña. This section of the climb to Monte Groba was used in the 2014 Vuelta stage 19 won by Adam Hansen. From Torroña the road flattens across the Sierra across windswept open terrian, but nonetheless stunning. The final km has two hairpins, and the final drag to the summit, and the spectacular view up the coast.