St John's Short Course motor-cycles with exhaust silencers, saddles, pedals and mud-guards. The startline was situated in St John's with the Short Course based on a number of public roads including the primary A1 Douglas to Peel road, A3 Castletown to Ramsey road and the primary A4 Peel to Kirk Michael "Coast Road". The highest point of the course was on the primary A3 Castletown to Ramsey Road at St John's Chapelon the Cronk-y-Voddy straight at 780 ft above sea level. Motor racing began on the Isle of Man in 1904 with the Gordon Bennett Trial and was originally restricted to touring cars. As
Castletown, Isle of Man to the west Port St Mary and Port Erin. The older parts of the town are largely built of local grey limestone. At Scarlett, a short distance to the south of the town, there are the remains of an ancient volcano and various other features such as fossils and thick sheets of limestone. The A3 road connects Castletown with Ramsey via St John's, while the A5 road (also known as New Castletown Road as opposed to the Old Castletown Road which takes a more rural route nearer the coast) connects the town with Douglas to the north-east and Port Erin