Grand Prix de St. Petersburg IndyCar Series 2021 2 2021-04-25 2021-04-25 The 2021 Firestone Grand Prix of St. Petersburg was the second round of the 2021 IndyCar season. The race was held on April 25, 2021, in St. Petersburg, Florida. The race lasted for 100 laps and was won by Colton Herta. 1099833