TT Circuit Assen is located in the northern Dutch province of Drenthe, near the town of Assen. Motor racing at the circuit traces its origins to 1925, when the first Dutch TT was organised by a local motorcycle club on a 28.4-kilometre triangular street circuit between the towns of Borger, Schoonloo, and Grolloo. Over the following decades the course was progressively shortened and brought closer to a modern permanent track layout. By 1955 a new 7.7-kilometre circuit was created that still used public roads but resembled a permanent racing facility. The track finally became a fully enclosed permanent circuit in 1992, at which point it reached its current general configuration.
The circuit is renowned for its flowing, technical character. Long curves, combined with changes in direction that reward smooth, committed riding, make Assen a particular favourite with motorcycle racers and spectators alike. The venue's nickname, the Cathedral of Speed, reflects its almost sacred status in the motorcycle racing world and the devotion of its Dutch fanbase.
Assen has hosted motorcycle racing at world championship level continuously since 1949, when the Dutch TT became a round of the inaugural Grand Prix motorcycle racing World Championship. The circuit holds the record as the only venue to have appeared on the MotoGP calendar every year since the championship's creation in 1949, with the single exception of 2020 when the event was cancelled due to the COVID-19 pandemic.
The Superbike World Championship, established in 1988, incorporated Assen into its calendar in the years following its launch. The Dutch Round has since become one of the championship's most popular stops, drawing large crowds who follow both the WorldSBK and the Supersport World Championship support series. The event's proximity to Germany, Belgium, and the United Kingdom makes it accessible for travelling fans across Northern Europe.
The current TT Circuit Assen measures approximately 4.5 kilometres and features a mixture of fast, sweeping corners and slower, more technical sections. The track's surface and layout favour riders who can maintain corner speed rather than relying on hard stopping and acceleration. This characteristic tends to produce close, strategic racing in both the WorldSBK and WorldSSP categories.
The circuit's northern European setting means weather conditions at race weekends can be variable, with rain a consistent possibility even during the summer months when the event is typically scheduled. Mixed-conditions races have added to the drama of the Dutch Round on several occasions throughout the WorldSBK calendar's history.
The Dutch Round is notable for its atmosphere, with Assen known for knowledgeable and passionate motorcycle racing fans. The circuit's standing capacity regularly draws crowds measured in the tens of thousands over a race weekend, and the circuit holds importance beyond professional competition as a venue where amateur riders can also take to the track during non-race days. The Dutch motorcycle racing public has a long tradition of following both domestic and international series, contributing to the event's reputation as one of the premier race weekends on the WorldSBK calendar.