The South Devon Railway sea wall is situated on the south coast of Devon in England. A footpath runs alongside the railway between Dawlish Warren and Dawlish, then another footpath forms a continuation to the sea front promenade at Teignmouth. Both of these form part of the South West Coast Path.
The South Devon Railway was built to the designs of Isambard Kingdom Brunel; it takes a route from Exeter which follows the River Exe to Dawlish Warren, runs beneath the sea cliffs to Teignmouth and then follows the River Teign to Newton Abbot. It follows tidal waters for about 13 miles, 4 of which are open sea.