The Fell Valley Railway is a fictional narrow gauge railway on the Island of Sodor in The Railway Series of children's books by the Rev.W.Awdry and Christopher Awdry. Part of its route is now occupied by the Arlesdale Railway. The railway ran from the coast at Arlesburgh along the Arlesdale valley then through the Sudrian mountains to King 'Orry's Bridge near the town of Peel Godred. At Arlesburgh it met a branch of the standard gauge North Western or Fat Controller's Railway.