The Ruislip Lido Railway is a 12 in (305 mm) gauge miniature railway around Ruislip Lido in Ruislip, 14 miles (22.5 km) north-west of central London. Running from the main station at Woody Bay by the lido's beach, on a 1.02-mile (1.64 km) track around the reservoir, the railway passes through Ruislip Woods to Willow Lawn station and tea room near the lido's car parks. It is the longest 12 in (305 mm) gauge railway in the United Kingdom.