Passadiços de Alvor (Ria de Alvor boardwalk)

The Passadiços de Alvor are a raised wooden walkway running parallel to the sea through the dunes between Alvor and Praia dos Três Irmãos, beside the Ria de Alvor estuary. It is free and flat. Portimão council gives the boardwalk itself as 2.8 km, while walking guides describe a roughly 6 km route that mixes boardwalk, gravel, dunes and beach. It is about 21 km by road from Lagos (routing model, no traffic).

What the sources say (research)

• Length: Portimão municipality says the boardwalk has “a total length of 2.8 km” and runs parallel to the sea. [Município de Portimão via Facebook, 4 Oct 2026]
• Walking guides describe the wider “Ao Sabor da Maré” route, informally called the Passadiços de Alvor, as about 6 km from Praia dos Três Irmãos to the Ria de Alvor. [tempodeviajar.com; dareyouspot.com, 4 Oct 2026]
• OSM places “Passadiços do Alvor” on the Marginal de Alvor at Praia de Alvor. [Nominatim, 4 Oct 2026]
• By road from the lagos.md point to that OSM point: 21.2 km, about 28 minutes (OSRM model, no traffic). [OSRM, 4 Oct 2026]
• Boardwalks between Praia dos Três Irmãos and Alvor protect the dunes — walk only on the paths and boardwalks. At low tide, crabs, mussels, shells and limpets on Alvor’s rocky point; gannets in winter, shearwaters in summer, and common dolphins. [Visit Portimão, 4 Oct 2026]
• Signed as “Ao Sabor da Maré” (PTM PR2), about 6 km of boardwalks and earth paths, easy and flat, described as wheelchair- and stroller-friendly; no shade; parking near the fishing port. [tempodeviajar.com, undated, 4 Oct 2026]

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