The Circuit de Spa-Francorchamps is the venue of the Formula One Belgian Grand Prix and the Spa 24 Hours and 1000 km Spa endurance races. It is one of the most challenging race tracks in the world due mainly to its fast and twisty nature and is a favourite circuit of many racing drivers and fans.
The old Spa circuit was essentially a speed course with drivers reaching much higher average speeds than on other race tracks and became notorious for fatal accidents. Multiple fatalities during the 1973 and 1975 24 Hours of Spa touring car races sealed the old circuit's fate and 1978 was the last year Spa was in its original form. After a boycotted race in 1969, formula One would not return to Spa until 1983 on the modern track.
The most famous part of the circuit is the Eau Rouge / Raidillon combination. Having negotiated the La Source hairpin, drivers race down a straight to the point where the track crosses the Eau Rouge stream, before being launched steeply uphill into a sweeping left-right-left collection of corners with a blind summit.
Following the deaths of Roland Ratzenberger and Ayrton Senna at Imola in 1994, the following F1 races saw the introduction of chicanes made up from stacked tyres. The entry to Eau Rouge was obstructed in such a way in 1994, although it was returned to its previous glory the following year. The corner was slightly modified for 2002, but still retains its character.