Explore hiking trails around Silvares, Pias, Nogueira e Alvarenga, Porto. The best hike near Silvares, Pias, Nogueira e Alvarenga is Sete Lagoas Loop, a 5.9 mile loop in Peneda-Gerês National Park. Silvares, Pias, Nogueira e Alvarenga has population 6594.0.