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| Raidillon | |
|---|---|
| Name | Raidillon |
| Other names | Eau Rouge–Raidillon complex |
| Location | Circuit de Spa-Francorchamps, Stavelot, Liège Province, Belgium |
| Coordinates | 50°26′N 5°58′E |
| Opened | 1921 |
| Turns | Eau Rouge, Raidillon |
| Notable events | Belgian Grand Prix, Spa 24 Hours, World Endurance Championship |
Raidillon.
Raidillon is the name commonly applied to the uphill right-hander and crest at the end of the Eau Rouge complex on the Circuit de Spa-Francorchamps in Stavelot, Belgium. The sequence forms one of the most recognised sections in Formula One, motorsport and endurance racing, combining a steep gradient, blind crest and high-speed cornering that challenge drivers, teams and engineers alike. Its reputation stems from a century of racing at Spa, association with the Belgian Grand Prix and iconic moments across series such as the World Endurance Championship and IMSA events.
The Raidillon section follows the downhill left of Eau Rouge and precedes the Kemmel Straight, creating a dramatic uphill right-left-right sequence within the Circuit de Spa-Francorchamps layout. It is famed for high cornering speeds achieved by vehicles from Formula One, Formula 2, Formula 3, GT racing and prototype classes. The geometry produces large vertical and lateral load changes that affect tyre wear, aerodynamic performance and suspension setup — areas of concern for teams like Red Bull Racing, Mercedes-AMG Petronas, Scuderia Ferrari and McLaren Racing during Belgian Grand Prix weekends.
Spa-Francorchamps was inaugurated in 1921, with the Raidillon/Eau Rouge sequence evolving as part of the original fast road circuit linking Spa, Francorchamps and Stavelot. The corner gained prominence through interwar endurance contests and postwar Formula One World Championship rounds, including classic victories by drivers such as Stirling Moss, Alberto Ascari and Jim Clark. Throughout the 1970s and 1980s it featured in historic battles involving teams like Lotus, Ferrari and Brabham. Modern safety reviews by bodies including the Fédération Internationale de l'Automobile prompted resurfacing and barrier changes in the 1990s and 2000s following incidents in Spa 24 Hours and Belgian Grand Prix events.
Raidillon sits on the uphill section that leads onto the Kemmel Straight, linking to runoff areas and grandstands near the Eau Rouge valley. The corner sequence comprises a left kink at Eau Rouge, an immediate right-hander climbing at gradients exceeding 10–20%, and a subsequent left-right kink that crests the ridge before the straight. Surrounding features include the Pouhon sector, the Les Combes chicane, and service roads used by marshals from organisations such as the Royal Automobile Club of Belgium during race operations. The topography influences microclimate conditions, with fog and rain common due to proximity to the Ardennes forest and Ardennes hills.
Raidillon is integral to race strategy, overtaking dynamics and aerodynamic development. Exiting Raidillon with maximum momentum benefits slipstreaming battles on the Kemmel Straight, affecting powertrains from manufacturers like Mercedes-Benz, Honda, Renault, Ford and Porsche in various eras. Aerodynamic packages tested by teams at Spa have informed car designs used in events such as the 24 Hours of Le Mans, Monza Grand Prix and Formula One world championship campaigns. Media coverage by broadcasters like BBC Sport, Sky Sports F1 and Eurosport often highlights the corner in feature packages about driver bravery, engineering and circuit heritage.
Raidillon’s blind crest and high speeds have been the scene of multiple high-profile accidents. Historic crashes involved drivers such as Derek Warwick in club racing or major pile-ups that prompted safety debates after incidents during Spa 24 Hours and Formula One practice sessions. The corner figured in dramatic moments for competitors like Ayrton Senna in broader Spa narratives, and in modern times collisions involving drivers from teams including Williams, Toro Rosso, Alpine and Haas F1 Team have led to red flags and lengthy investigations by the FIA. Motorcycle and sports car events have likewise experienced severe impacts, engaging emergency services from Belgian Civil Protection and medical teams trained by institutions such as Fédération Internationale de Motocyclisme.
Following accidents and technical studies by the FIA and circuit owners, Spa-Francorchamps implemented changes affecting Raidillon: expanded gravel traps, enlarged asphalt runoff, reinforced energy-absorbing barriers like TecPro and SAFER barrier installations, track surface reprofiling and adjustments to spectator access. Barrier relocations and paddock reorganisations have involved contractors and governing bodies including the Royal Automobile Club of Belgium and commercial partners from Motorsport UK-affiliated teams. These modifications balanced heritage concerns championed by preservationists and historians of motorsport with contemporary safety criteria used at circuits such as Circuit de Barcelona-Catalunya and Silverstone Circuit.
Raidillon has entered popular culture through documentaries, photographs and video games. It has been featured in filmic portrayals of racing history by producers associated with Netflix and BBC documentaries, in automotive journalism from outlets like Motorsport Magazine, Autosport and Top Gear, and in simulation titles produced by Codemasters, Slightly Mad Studios and Polyphony Digital. Its silhouette appears on merchandise sold by circuit operators and is celebrated in annual events attended by personalities including former champions like Michael Schumacher and Kimi Räikkönen. The corner remains a pilgrimage site for enthusiasts from clubs such as FIA Historic Sports Car Championship and national fan associations.
Category:Circuit de Spa-Francorchamps Category:Motorsport venues in Belgium