In Festival takes place in Burgos, Spain on June 5-6, 2026, featuring a diverse lineup of Spanish rock, ska, and indie artists. The festival showcases 16 acts including headliners ETS, Canteca De Macao, and Kaotiko, alongside emerging artists like Parquesvr and Me Fritos & The Gimme Cheetos. With a strong focus on rock, ska, Basque music, indie, and power trio formats, In Festival offers a comprehensive celebration of contemporary Spanish alternative music. The two-day event highlights both established and up-and-coming Spanish artists across multiple rock and indie subgenres.

In Festival is a two-day standalone music festival.