River Duero is one of the three biggest rivers of the Iberian Peninsula, flowing from its source near Duruelo de la Sierra in Soria Province across northern-central Spain and Portugal to its end in Porto, Portugal. River Duero is famous for its several recognised wine-producing regions along its course in Spain and Portugal.
Madrid – Transfer San Leonardo de Yagüe
San Leonardo de Yagüe – Cañón del Río Lobos (circular)
San Leonardo de Yagüe – Quintanar de la Sierra
Quintanar de la Sierra – Neila
Neila – Laguna Negra de Soria
Laguna Negra de Soria – Molinos de Duero
Molinos de Duero – San Leonardo de Yagüe