Spain

Martí claimed Campos Racing's first F3 pole at Barcelona, a quarter of a second clear of Barnard, with Colapinto third. From reverse-grid pole, O'Sullivan led the Sprint throughout, repelling Browning's repeated lunges at Turn 1 to win by under two seconds for his second victory of the year. Fornaroli took third after Saucy ran wide, his second podium in a row. Two safety cars punctuated the race: a Cohen–Villagómez clash at Turn 9 ended Cohen's race, and later contact involving Montoya and Aron plus a Minì–Mansell collision brought further caution. Penalties rained down, with Minì handed ten seconds for the Mansell incident, dropping him to 21st and denting his title hopes. In the Feature, Martí converted pole into a lights-to-flag win at his home race, greeted on the podium by Alonso. An opening-lap safety car followed a Fornaroli–Browning clash. Behind Martí, Colapinto used DRS to pass Barnard for second, and Beganovic repeated the move a lap later for third. Martí pulled clear to win by over four seconds. Goethe was penalised for contact with Saucy.