San Lorenzo Beach, Urban beach in Gijón, Spain

San Lorenzo is a shell-shaped urban beach in central Gijón, running 1,550 metres from staircase 0 at the Church of San Pedro to staircase 16 at the mouth of the Piles, with a rocky stretch adding 300 metres to the Mayán de Tierra. Its sand covers 40,000 m² at high tide and 240,000 m² at low tide. The Paseo del Muro, built between 1907 and 1916, runs alongside it.

In 1867 Gijón's expansion plan was drawn over the beach sands, creating the La Arena neighbourhood. The first bathing establishment opened in 1874; four followed between staircases 0 and 5, the last closing in 1936. The seafront wall was built from 1907 to 1916 to a design by municipal architect Miguel García de la Cruz.

The beach's name comes from the church of San Pedro nearby, and its staircases serve as meeting points: La Escalerona (staircase 4) hosts beach football when the tide allows, and staircase 15 has two beach-volleyball courts. The four early bathhouses between staircases 0 and 5 popularised the bourgeois «Baños de Ola» among Gijón residents until the last closed in 1936.

The beach has showers, restrooms, and lifeguard services available, with good accessibility for visitors of different abilities. The adjacent promenade includes shops and restaurants that complete the visit.

The beach's name recalls the sinking of the coal ship Castillo de Salas in the bay in January 1986, which polluted the water and sand with coal; traces of it are still found today. The sand covers 40,000 m² at high tide and 240,000 m² at low tide.