Zolder opened in 1963 and became Belgium's main Formula 1 alternative while Spa was considered too dangerous. Chicanes were added and revised as speeds rose, but the championship left after 1984 once the modernised Spa had returned.
The circuit's history is inseparable from tragedy: mechanic Giovanni Amadeo was killed during the confused 1981 start procedure, and Gilles Villeneuve died in qualifying in 1982. Michele Alboreto won the final 1984 race for Ferrari.
Across 4.262 km, its 10 corners create a distinct rhythm between braking, precision and acceleration. As a permanent racing circuit, it asks drivers and teams to adapt setup, tyre management and race strategy to the venue's particular constraints, while its clockwise direction shapes the sequence of its most demanding sectors.