<P> The TT Access Road runs parallel to a section of the A1 Peel Road, which is part of the Snaefell Mountain Course, and operates during practice and race periods to enable vehicles to pass from inside of the race course to the outside . It runs along a section of former railway line on the historic Douglas to Peel route, from the junction of the A5 New Castletown Road at the Quarter Bridge, passing under the course at Braddan Bridge, to an exit at Braddan School Road in Douglas outskirts, near the former Braddan Railway Halt and the A23 / Ballafletcher Road junction . The access road is a narrow, single - track width with passing places and is restricted to cars and light vans below a weight limit of 3,500 kilograms (3.4 long tons; 3.9 short tons). When used for vehicular traffic, pedestrian access is prohibited, but at other times it is part of a system of nature - trails . </P> <P> The Oxford Companion to World Sports and Games notes: </P> <P> The oldest motor - cycle racing circuit still in use is the Snaefell Mountain Course over which the Isle of Man Tourist Trophy races are run . Starting at the town of Douglas on the south - east coast, the course takes a wide sweep to the west and north to enter the town of Ramsey on the north - east coast and thence return to the starting point, each lap measuring 37 ​ ⁄ miles (60.7 km) and taking in over 200 bends while climbing from sea level to an altitude of over 1,300 ft (396 m). This circuit is the epitome of the natural road course, all the roads used being ordinary public highways closed for the racing and practice sessions . </P> <P> During race week, the TT races create a carnival atmosphere with picnicking spectators flanking vantage points on the circuit similar to other community festivals in another form of cycle racing--the Tour de Yorkshire and Le Tour de France . </P>

Where is the isle of man tt located
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