What is the hillclimb?
Winding its way through the centre of the event, the 1.16-mile hillclimb has been the centre of the action since its inception.
Every year, this unassuming stretch of road leading to the top of the Hill is transformed in to one of motor racing's most challenging courses.
For iconic manufacturers, drivers and race teams, it’s a chance to show off their stunning machines and perfectly honed driving skills. But when the stopwatch comes out on Sunday, only a select few will put everything on the line for a shot at glory.