The three-time Indy 500 winner, who retired from fulltime open-wheel competition to race a Penske-Acura in the IMSA WeatherTech SportsCar Championship, will wave the green flag for the event he won in 2006, ’07 and ’12.

"The Firestone Grand Prix of St. Petersburg has always been one of my favorite events,” he said. “The fences are great to climb.

"I am honored to be grand marshal this year. I will miss competing in the race, but I look forward to seeing all of the fans and taking part in all of the activities during the weekend.

“I cannot wait to see the new aero kit IndyCars - fans will not want to miss out on all of the action."

Firestone, which sponsors the GP of St. Petersburg have joined with Team Penske and the race organizers to honor and celebrate Castroneves' accomplishments as an IndyCar driver.

His activities will spread over five days of activities encompassing community, media and fan interaction events on site and within the City of St. Petersburg.

"Everyone at Firestone is grateful to Helio for his contributions to our sport," said Lisa Boggs, director of Bridgestone Americas Motorsports.

"Honoring him as grand marshal of the Firestone Grand Prix of St. Petersburg is a great way to thank him and give fans the opportunity to let him know how much they appreciate all he has done.”

Kim Green, co-owner, chairman and CEO of Green Savoree Racing Promotions which runs the traditional season-opener, added: “It's our honor to have Helio join us as grand marshal and recognize his many IndyCar achievements at the Firestone Grand Prix of St. Petersburg.

"Our fans will no doubt give him a great reception as he returns to the race track where he sets the standard for success."

Among several activities Castroneves will be available for a moderated fan question and answer session in the Mahaffey Theater.

Ticket holders who are members of Firestone Grand Prix Champions Club will have access to an exclusive autograph session. Details will be posted on gpstpete.com closer to the event.