 The Kohler International Challenge is an annual peak-of-summer tradition for both partcipants and spectators.For spectators it's a blend of art on wheels and great competition between everything from cult favorites to priceless limited production models. For participants its the chance to mingle on and off the track with fellow vintage enthusiasts and special guests including event host Brian Redman. Whether it's pushing the limits on Road America's legendary 4-mile circuit, touring in a sports car or entering the race car and sports car Concours d'Elegance, this weekend is all about vintage cars. No other vintage event in the country draws more eyes or wheels.  |  Historic Can-Am monoposto Classic Formula Cars Vintage Small/Medium Displacement Vintage Sports Racing Cars Early Historic Sports Racing Cars Big-Bore Production Monoposto Formula 70, Formula B/Atlantic Historic/Post-Historic Medium Displacement Post-Historic F1/IndyCar Post-Historic GT and Production Parade |
