Length: 4.56 km // 2.83 mi
Location: Netherlands // 52.96166,6.52333
Assen is the only circuit that has stayed as part of the World Championship since the first season back in 1949. In 2006 it under went major alterations, with the removal of the majority of the Northen Loop section, making way for the TT World fans' area. The rest of the circuit retains much of its original character, making it one of the most technical and physically demanding circuits on the calendar. Unlike a lot of other circuits, which feature long straights and medium-fast corners, Assen is tight, flowing and characterised by high-speed corners and quick changes in direction. Even the surface is unusual, cambered as it is in the style of a public road to aid drainage.