Billown Circuit Billown Circuit The Billown Circuit is a motorcycle road-race course used for the Southern 100, the Pre-TT Classic races and the National Road Races meetings near Castletown on the Isle of Man. Racing is held on public roads closed for racing by an Act of Tynwald, the parliament of the Isle of Man. The course is 4.25 miles (6.8 km) long and is in the parishes of Arbory and Malew. The course start-line is on the outskirts of Castletown and the course includes parts of the primary A5 New Castletown Road, A28 Castletown to Ballabeg Road, A7 Ballasalla to Port
Castletown River Castletown River The Castletown River is a river which flows through the town of Dundalk, County Louth, Ireland. It rises near Newtownhamilton, County Armagh, Northern Ireland, and is known as the Creggan River in its upper reaches. Its two main tributaries are the Kilcurry and Falmore rivers and it enters the Irish Sea at Dundalk Bay on the east coast of Ireland. The Castletown River flows in at the northwest corner of Dundalk Bay creating a deep channel through the intertidal zone. It is routinely dredged for navigation purposes for the deep water port of Dundalk. The river features wild