Whichever way you go, it's a long walk to get to Marros. The beach is about 2 miles long, stretching from Telpyn Point at the western end to Ragwen point at the eastern end, and is a mostly sandy beach backed by a storm bank of pebbles with boulder clay behind. At low tide the patchy remains of a submerged forest can be seen, and also the wreck of a schooner (the Rover) which went aground in 1886 (Grid Ref: SN198074). At the western end there are cliffs and caves. It never gets busy here, but being remote it has become popular with local naturists. Litter is a problem, with the usual unsightly tideline of wood, plastic and fishing-related debris.
Access is along a public footpath (track) which runs from the church in Marros to the coast path and then continues down to the beach. The distance is about a mile with a vertical descent of about 400 feet. A small car park is located next to Marros church. If the tide is low, walking along the shore from Amroth or Telpyn beaches is another option. Alternatively, roadside parking about ½mile east of Amroth (Grid Ref: SN181076) gives access to the coast path. After a walk of approximately ¾ mile the coast path descends into a secluded, steep sided valley giving access (between low and mid-tide) to the western end of Marros Beach. Here a stream cascades over rocks onto the shingle next to a level grassed area which is ideal for picnics etc.
The best place for sunbathing is at Ragwen Point, where the rocks slope gently to the south. There is also access to the coast path at this end. Dogs are allowed at all times.