7. Southwest Alentejo & Vicentine Coast Natural Park 80km (Porto Covo – Zambujeira do Mar – Odeceixe)
One of Portugal’s most protected coastal areas and one of the best part of coast for bike adventures. Expect minimal traffic, endless ocean views, and some of the longest and most beautiful gravel roads running right along the shoreline. Landscapes range from rocky cliffs to coastal meadows and secluded coves.
Some of the most essential gravel sections right along the coastline can be found near Porto Covo and again south of the Cabo Sardão lighthouse down to Zambujeira do Mar — these are must-ride stretches with open views, dramatic cliffs, and the Atlantic always by your side.
However, around Vila Nova de Milfontes, the direct coastal route becomes much more difficult: many tracks are either dead-end roads, deep sand, or blocked access, and not suitable for bike travelling. If you're not afraid of gravel and some hills, the good option here is to detour inland via Cercal – S. Luís – Odemira. The alternative is to use local rural roads running 2–3 km inland, which offer a smoother but still scenic way through the region.