Dutch TT

After the Dutch government relaxed laws allowing the motorsport racing on public roads, the Assen & Omstreken motorcycle club organized and held the first Dutch TT on July 11, 1925. Since then the event has taken place every year with the exception of the years 1940 to 1945 because of the Second World War.[3] The 1925 races were held on a 28.4 km (17.75 miles) street circuit in the shape of a triangle between the towns of Borger, Schoonloo and Grolloo.[4] From 1926 to 1955, the races were held on a 16.536 km (10.335 mile) rectangular shaped street circuit through the towns of De Haar, Hooghalen, Laaghalen and Laaghalerveen.[4] In 1955, a new 7.705 km (4.8 mile) circuit was created which still used public roads but, more closely resembled a modern race track.[4] In 1992, the race track became a permanent enclosed circuit.[4]

• 1949-1957, 1959-1971: Grote Prijs van Nederland der K.N.M.V. (no official sponsor)[5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]
• 1972, 1981-1985, 1992: Dutch TT Assen (no official sponsor)[27][28][29][30][31][32][33]
• 1973-1977: Dutch TT Assen/Grote Prijs van Nederland der KNMV (no official sponsor)[34][35][36][37][38]
• 1978-1980, 1986-1991: Dutch TT (no official sponsor)[39][40][41][42][43][44][45][46][47]
• 1993-1997: Lucky Strike Dutch Grand Prix[48][49][50][51][52]
• 1998-2000: Rizla+ Dutch TT[53][54][55]
• 2001-2003: Gauloises Dutch TT[56][57][58]
• 2004-2005: Gauloises TT Assen[59][60]
• 2006-2008: A-Style TT Assen[61][62]
• 2009: Alice TT Assen[63]
• 2010: TIM TT Assen
• 2011-2014: Iveco TT Assen[64]
• 2015-2019: Motul TT Assen[65][66][67]

2007: 91,429[68]