The Bala Lake Railway (Welsh: Rheilffordd Llyn Tegid) is a narrow gauge railway along the southern shore of Bala Lake in Gwynedd, North Wales. The line, which is 4 1/2 miles (7.2 km) long, is built on a section of the former standard gauge Ruabon - Barmouth GWR route that closed in 1965. The Bala Lake Railway, which runs on 2 ft (610 mm)-gauge preserved rolling stock, is a member of the Great Little Trains of Wales.