The Rio 200 (initially Rio 400) was a CART Champ Car event held at Autódromo Internacional Nelson Piquet, in Rio de Janeiro. The race was contested on the trapezoid speedway at the facility known as Emerson Fittipaldi Speedway. The race was held from 1996 to 2000. The first three events were run over 400 kilometers; the final two were 200 miles.