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
Ballabeg, Lonan Ballabeg is mainly agricultural land used for the grazing of sheep. There are areas of mature and newly planted woodland (including a nationally important cliff-side ancient oak forest remnant), gorse, brooghs (headlands) and small dubs or ponds. The A2 Douglas to Ramsey road bisects the settlement. The Manx Electric Railway runs through the settlement and has a level crossing there. The Raad ny Foillan long-distance path also passes through Ballabeg. The settlement has no defined boundaries but is said to be bounded by the Raad Ballagawne in the south, the Irish Sea (Laxey Bay) in the east, Church Road in