First Leg of International Relay Takes Green Flag from Indianapolis to St. Petersburg, Florida. Two-time Olympic swimming gold medalist Zach Apple waved the green flag at the Indianapolis Motor Speedway on March 7 to signify the start of its relay journey and to kick off the 100-day countdown to the U.S. Olympic Team Trials – Swimming in Indianapolis. “To be able to help kick off the Green Flag Relay and the start of the INDYCAR season with a tie back to competitive swimming and the racing we’ll be doing here in Indianapolis this June is really special to me.”. “There’s no one better to kick off this year’s relay than Zach.

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