The Butetown branch line, also known as the Cardiff Bay Line, is a 1-mile-6-chain (1.7 km) commuter railway line in Cardiff, Wales from Cardiff Bay to Cardiff Queen Street. The service pattern used to comprise a mixture of shuttle services along the branch and through trains along the Rhymney Line to Caerphilly, or the Coryton Line to Coryton, but since December 2005 is a shuttle service from Queen Street station. The normal journey time is four minutes.