Road America
Road America afirma ser o "circuito permanente mais rápido do mundo", com uma média de velocidade impressionante de 95 mph, e há poucas outras pistas de corrida capazes de contestar esse título. Foi pavimentado em abril de 1955 em 640 acres (260 hectares) de colinas ondulantes na Kettle Moraine, no Lago Elkhart, 60 milhas ao norte de Milwaukee. Clif Tufte, um engenheiro de estradas, teve a ideia de construir um circuito depois que as autoridades de Elkhart Lake proibiram corridas de rua no início dos anos 1950. A pista de 4,04 milhas com 14 curvas que ele projetou e construiu é uma parte essencial de muitas séries de esportes motorizados de alto perfil, como o WeatherTech SportsCar Championship, o IndyCar, o NASCAR Cup, o NASCAR Xfinity, a MotoAmerica, o American Le Mans e muitas outras. A audiência combinada desses eventos é de mais de 800.000 espectadores a cada ano.
O clima continental úmido de Wisconsin significa que há verões amenos com muita chuva e invernos frios e nevados com temperaturas abaixo de 30 °F. No entanto, o automobilismo nunca para em Road America, com mais de 400 eventos por ano, como a famosa Winter Autocross Series, que acontece independentemente das condições climáticas adversas. O layout da pista é ideal para altas velocidades, com retas longas e curvas com mudanças de elevação espetaculares, como a que se aproxima da linha de chegada, que parece uma parede vertical do ponto de vista do piloto.
Road America's Current configuration preserves the 6.472-kilometer 'National Park of Speed' layout that has defined Wisconsin road racing since 1955, featuring 14 turns across 259-hectare facility near Elkhart Lake where recent repaving modernized surface characteristics while maintaining the circuit's fundamentally unchanged geometry that makes it North America's premier natural-terrain road course. This FIA Grade Two circuit combines long straights rewarding top speed with technical sections demanding precision through corners following natural landscape contours rather than bulldozed flat design, creating the balanced character that attracts IndyCar Series, IMSA SportsCar Championship, MotoAmerica Superbike Championship, and numerous club racing organizations year-round. The Current designation distinguishes this modern-surface variant from historical configurations, though Road America's layout remains remarkably consistent with founder Clif Tufte's 1955 original vision where minimal geometry changes across seven decades demonstrate timeless circuit design.
The Current configuration's character derives from preserved classic layout combined with contemporary surface quality. Recent repaving created the 'National Park of Speed' descriptor celebrating smooth asphalt and modern grip levels, but the 14-turn geometry maintains traditional challenges: Turn 5's off-camber Carousel demands precise line selection, the Kink's high-speed compression tests courage at 240+ kph, Turn 12's hairpin requires patience before Canada Corner's final complex. The 6.47-kilometer distance creates lap times around 2:00-2:10 for professional prototypes and open-wheel cars, making it one of North America's longest permanent road courses where mistakes in any of 14 corners cost significant recovery time. Wisconsin's continental climate creates dramatic seasonal variation—summer events see track temperatures approaching 40°C while spring and fall races operate in cool conditions, with afternoon thunderstorms common during racing season. Road America's 640-hectare facility preserves vast run-off areas and spectator viewing opportunities across natural amphitheater terrain. The Current configuration particularly showcases how classic 1950s circuit design remains relevant in modern motorsport, where recent surface improvements enhance rather than compromise the fundamental layout that established Road America's reputation as North America's most complete natural-terrain road racing challenge.
