Highlighting the schedule, which includes return visits to Infineon Raceway, Lime Rock Park, Mazda Raceway Laguna Seca, Mid-Ohio Sports Car Course, Portland International Raceway, Road America, Road Atlanta and Sebring International Raceway, will be first-time visits to temporary race circuits in Denver, Colo. and St. Petersburg, Fla.

"We worked very hard to reach key markets, venues and race weekends that will be attractive to our fans, sponsors and teams, and we're pleased with the 2005 SCCA SPEED World Challenge schedule," Mitch Wright, Vice President and General Manager of SCCA Pro Racing said. "The addition of dates with the Indy Racing League and Champ Car World Series allows us to reach a slightly different segment of race fan and automotive enthusiast than we do when we run along the American Le Mans Series."

For the fifth-straight year, the SPEED GT and Touring Car Championships begin their seasons at Sebring International Raceway March 16-19 at the 53rd Mobil 1 Twelve Hours of Sebring. The central Florida event annually draws over 150,000 race fans and spring breakers.

Teams have little time to rest after the rush of Sebring before heading to St. Petersburg, Fla. to be a part of the Indy Racing League's IndyCar series road course debut at the April 1-3 Honda Grand Prix of St. Petersburg. World Challenge has previously visited the St. Petersburg area three times at different venues, the most recent being in 1997. Many believe the St. Petersburg circuit to be among the finest temporary facilities in North America.