TT Circuit Assen
Grand Prix Circuit (2006–present) | |
Motorcycle Circuit (2010–present) | |
| Location | Assen, Drenthe, Netherlands |
|---|---|
| Coordinates | 52°57′42″N 6°31′24″E / 52.96167°N 6.52333°E |
| Capacity | 110,000 |
| FIA Grade | 2 |
| Owner | Stichting Circuit van Drenthe |
| Opened | 11 July 1925 (as Van Drenthe Street Circuit) 16 July 1955 (as Modern Circuit) |
| Closed | 1954 (for Van Drenthe Street Circuit) |
| Major events | Current: Grand Prix motorcycle racing Dutch TT (1949–2019, 2021–present) World SBK (1992–2019, 2021–present) Sidecar World Championship (1955–2003, 2005–2008, 2013–2019, 2021–present) BSB (2012–2019, 2025–present) Supercar Challenge (2001–present) Former: Eurocup-3 (2025) FIM EWC (1979–1980, 1995–1996, 2003–2006) MXGP (2015–2018) DTM (2019–2021) ETRC (2004–2005, 2009) ADAC GT Masters (2008–2011) Superleague Formula (2010–2011) Champ Car World Series (2007) Motocross World Championship (2015-2018) |
| Website | http://www.tt-assen.com/ |
| Grand Prix Circuit (2006–present) | |
| Length | 4.555 km (2.830 mi) |
| Turns | 18 |
| Race lap record | 1:17.109 ( Ingo Gerstl, Toro Rosso STR1, 2023, BOSS GP/F1) |
| Motorcycle Circuit (2010–present) | |
| Length | 4.542 km (2.822 mi) |
| Turns | 18 |
| Race lap record | 1:31.866 ( Francesco Bagnaia, Ducati Desmosedici GP24, 2024, MotoGP) |
| Grand Prix Circuit (2005) | |
| Length | 5.997 km (3.726 mi) |
| Turns | 25 |
| Race lap record | 2:00.991 ( Valentino Rossi, Yamaha YZR-M1, 2005, MotoGP) |
| National Circuit (2005) | |
| Length | 3.851 km (2.393 mi) |
| Turns | 16 |
| Race lap record | 1:18.602 ( Martin Hippe, Dallara F303, 2005, F3) |
| Grand Prix Circuit (2002–2004) | |
| Length | 6.027 km (3.745 mi) |
| Turns | 26 |
| Race lap record | 1:59.472 ( Valentino Rossi, Yamaha YZR-M1, 2004, MotoGP) |
| National Circuit (2002–2004) | |
| Length | 3.904 km (2.426 mi) |
| Turns | 17 |
| Race lap record | 1:15.928 ( Thomas Holzer, Dallara F302, 2004, F3) |
| Grand Prix Circuit (1984–2001) | |
| Length | 6.049 km (3.759 mi) |
| Turns | 26 |
| Race lap record | 2:02.471 ( Tadayuki Okada, Honda NSR500, 1999, 500cc) |
| National Circuit (1981–2001) | |
| Length | 3.919 km (2.435 mi) |
| Turns | 17 |
| Race lap record | 1:23.110 ( Raymond Roche, Ducati 888 SBK, 1992, World SBK) |
| Grand Prix Circuit (1981–1983) | |
| Length | 7.685 km (4.775 mi) |
| Race lap record | 2:47.470 ( Kenny Roberts, Yamaha YZR500, 1983, 500cc) |
| Grand Prix Circuit (1976–1980) | |
| Length | 7.717 km (4.795 mi) |
| Race lap record | 2:54.500 ( Virginio Ferrari, Suzuki RG 500, 1979, 500cc) |
| Grand Prix Circuit (1955–1975) | |
| Length | 7.700 km (4.785 mi) |
| Race lap record | 2:55.500 ( Barry Sheene, Suzuki RG 500, 1975, 500cc) |
| Van Drenthe Circuit (1926–1954) | |
| Length | 16.536 km (10.275 mi) |
| Race lap record | 5:49.400 ( Geoff Duke, Gilera Saturno, 1954, 500cc) |
| Original Circuit (1925) | |
| Length | 28.400 km (17.647 mi) |
The TT Circuit Assen is a motorsport race track built in 1955 and located in Assen, Netherlands. Host of the Dutch TT, it is popularly referred to as "The Cathedral of Speed" by motorcycle racing fans. The venue has the distinction of holding the most Grand Prix motorcycle races every year (except 2020) since the series was created in 1949. It has a capacity of 110,000 spectators, including 60,000 seats. Since 1992, the circuit has also been part of the World SBK calendar except for the 2020 season.