World Challenge 2013

March 22–24, Streets of St. Petersburg (with IndyCar). St. Petersburg, Fla. (GT, GTS)

April 19–21, Streets of Long Beach (with IndyCar/ALMS). Long Beach, Calif. (GT, GTS)

May 17-19, Circuit of the Americas (with Australian V8 Supercar) Austin, TX

May 31–June 2, Detroit Belle Isle Grand Prix, (with IndyCar). Detroit, Mich. (GT, GTS)

July 4-6, Lime Rock Park TBD, (GT, GTS, TC, TCB)

July 12–14, Streets of Toronto, (with IndyCar). Toronto, Ont. Can. (GT, GTS)

August 2–4, Mid-Ohio Sports Car Course (with IndyCar). Lexington, Ohio (GT, GTS, TC, TCB)

August 23–25, Sonoma Raceway (with IndyCar). Sonoma, Calif. (GT, GTS, TC, TCB)

Oct. 4–6, Streets of Houston (with IndyCar). Houston, Texas (GT, GTS, TC, TCB)