2003 Tropicana 400

The Tropicana 400 at Chicagoland Speedway was the 18th race of the 2003 NASCAR Winston Cup Series season. The race was won by Christian Fittipaldi driving for Dale Earnhardt, Inc. Fittipaldi, in his rookie season, held off Jon Wood, making his Winston Cup debut, for the win.

Fittipaldi went from fourth to first on the final restart and held off the contending Rusty Wallace and Wood. It marked the second consecutive win for Dale Earnhardt, Inc. Fittipaldi became just the third foreign-born driver to visit a Winston Cup victory lane.

The pole was won by Dave Blaney, who set a 29.090-second lap during qualifying.