The GT300 class group divisions for Q1 of the OKAYAMA GT 300km RACE, Round 1 of the 2026 AUTOBACS SUPER GT series, which will take place on April 11th and 12th at Okayama International Circuit, have been announced as below. The GT300 Group divisioning for Q1 operates on the basis of the results at the end of last season. Since the number of participants in the GT300 class is 29 cars in this round, there will be 15 cars in Group A and 14 cars in Group B.