The Indy 500 and the Coca-Cola 600 -- NASCAR's longest race of the season -- are scheduled on May 27.
Patrick left the IZOD IndyCar Series at the end of last season to compete in NASCAR full-time this year, running the entire 33-race schedule in the Nationwide Series and at least 10 races in Sprint Cup.
"I hope to do it [Indy 500] in the future," she said during a press conference. "At this point, after a lot of conversations, it's just going to be the Coke 600. I think it's going to be a big challenge, but I'm looking forward to it."
Last November, Patrick and her team owner, Tony Stewart, who is the reigning Sprint Cup champion, announced eight of her 10-scheduled races, beginning with the February 26 season-opening Daytona 500. She is also slated to compete at Darlington (May 12), Bristol (August 25), Atlanta (September 2), Chicagoland (Sept. 16), Dover (Sept. 30), Texas (November 4) and Phoenix (Nov. 11).
Charlotte becomes the ninth race added to Patrick's Sprint Cup schedule. Her tenth event will announced at a later date. Stewart-Haas Racing is hopeful she will run a full-time schedule in NASCAR's premier series in 2013.
Patrick has competed in the Indy 500 in each of the last seven years, finishing in the top-10 six times. Her best finish in that race is third, which came in 2009. She posted a fourth-place run at Indy during her '05 rookie season in IndyCar.
Regarding this year's race at Indy, Patrick noted "It was just something that didn't quite work out on the business side of things."