Playa de San Julián near Liendo is an open public shoreline reached on foot. Use established paths and allow time for uneven ground around cliffs and coastal terrain, proceeding carefully and at a steady pace. There is no dedicated beach car park, so visitors use available roadside space in the area and continue walking to the shore, keeping access routes clear for others. No direct public transport reaches the beach, and access normally depends on a private car plus walking for the final approach on foot only. There is no admission fee expected, and there are no fixed opening hours; use is generally during daylight and planned as a short daytime stay. Morning to early afternoon gives stronger daylight for judging access and swimming conditions and for timing the walk in and out. The surface combines sand with rocky areas, and water entry may be rocky, so movement around the shore and into the water needs care. The sea is open Cantabrian water with variable swell and currents that can change quickly through the day. There is no lifeguard service, so swimming is unsupervised and caution is needed, especially for children and less confident swimmers. The beach is better suited to self-sufficient adults comfortable with remote conditions. Bring drinking water, food, sun protection, sturdy footwear for the path, and a bag for all waste, carrying everything in and out. There is little natural shade, and cliff bases are not reliable shelter from sun or wind. No toilets, showers, food, or drink are available at the beach. Plan a short half-day visit tied to weather and supplies, and leave room to adjust if swell or wind increases, including cutting the stay short if conditions change.