page_title: Isle of Man TT Mountain Course
section_title: Course Changes: 1920–1939
hierarchical_section_title: Isle of Man TT Mountain Course / History / Course Changes: 1920–1939
caption_attribution_description: English: Brandywell, Isle of Man.
context_page_description: The Isle of Man TT Mountain Course or TT Course is a motorcycle road-racing circuit located in the Isle of Man. The motorcycle TT Course is used principally for the Isle of Man TT Races and also the separate event of the Isle of Man Festival of Motorcycling for the Manx Grand Prix and Classic TT Races held in September of each year. The start-line for the Isle of Man TT Mountain Course is located on Glencrutchery Road in the town of Douglas, Isle of Man.
  The clockwise course has a lap of 37.73 miles, from the start line at the TT Grandstand on Glencrutchery Road in the island's main town of Douglas. After negotiating urban streets, the racing circuit turns right to leave Douglas at Quarter Bridge, then proceeds along the A1 Douglas to Peel road through the villages of Braddan, Union Mills, Glen Vine, Crosby, and Greeba. The course then turns right at Ballacraine on to the A3 Castletown to Ramsey road, firstly through countryside glens followed by agricultural land interspersed by the villages of Kirk Michael, Ballaugh and Sulby, finally intersecting with the A18 Snaefell mountain road after negotiating urban streets in the town of Ramsey.
context_section_description: For the 1920 Isle of Man TT, changes were made to the Mountain Course and competitors turned left at Cronk-ny-Mona and followed the primary A18 Mountain Road to Governor's Bridge with a new start/finish line on Glencrutchery Road which lengthened the course from the pre-World War I length of 37.50 miles (60.35 km) to 37.75 miles (60.75 km). An extensive programme of road improvements occurred to many roads in 1922 by the Highway Board including the Mountain Course with road widening at Sulby Bridge, from Port-e-Chee on the A1 Peel Road to Braddan Bridge and part of the main road through Crosby. Modification of Signpost Corner including rounding off the bend occurred in 1922 along with further road widening at Governor's Bridge with the completion of the link road to A2 Glencrutchery Road/Governor's Road and the removal of fence posts at Keppel Gate. Further changes to the course followed in 1922 with the adoption of a private road part of the Ballastowle Estate between Parliament Square and May Hill in Ramsey. The course had previously had negotiated the A2 Albert Road and Tower Road in Ramsey and the new course length was now 37.739 miles (60.74 km). The official course distance for the Snaefell Mountain Course was amended in 1938 to 37.73 miles (60.72 km) which is the current course length.
  For the 1934 Isle of Man TT races major alterations to the Mountain Course were carried out which included the removal of the East Snaefell Mountain sheep-gate. This was followed by the removal of the hump-backed bridge at Ballig and the road work was completed for the Manx Grand Prix in September 1935. Road widening occurred on the Mountain Course at the Highlander, Laurel Bank, Glen Helen (between the Old Quarry and Brew's Restaurant), and at Brandywell with the removal of the Beinn-y-Phott sheep-gate for the 1935 Isle of Man TT races. Road Improvements occurred at the 26th Milestone, Greeba Bridge and on the Sulby Straight for the 1938 Isle of Man TT races. Further road widening and landscaping occurred at the Waterworks with road widening between the Gooseneck and the 26th Milestone for the 1939 races. A memorial to Jimmie Guthrie was built in 1939 at The Cutting at a cost of £1,500 (equivalent to £94,000 in 2019).
caption: Brandywell TT Race Marshal Shelter and Weather Station on the A18 Mountain Road/B10 Sartfield Road looking north towards Snaefell Mountain and North Barrule
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