Super GT series 2025 1 2025-04-13 2025-04-13 https://r2.thesportsdb.com/images/media/event/thumb/nqz8gy1747481197.jpg https://r2.thesportsdb.com/images/media/event/poster/ewc5am1747480618.jpg The 2025 Okayama GT 300km was the first round of the 2025 Super GT Series. It was held at the Okayama International Circuit in Mimasaka, Okayama Prefecture, Japan on April 13, 2025. The GT500 category was won by Sho Tsuboi and Kenta Yamashita in the #1 TGR Team au TOM'S Toyota GR Supra, whilst Naoya Gamou and Togo Suganami won the GT300 category in the #65 K2 R&D LEON Racing Mercedes-AMG GT3 Evo. 2218168