Castelo Rock takes place August 6-8, 2026 in Muros, Spain, featuring a diverse lineup of rock, alternative, pop, emo, and screamo acts. The festival showcases both British and Spanish artists including headliners Big Special, Kid Kapichi, and Lau, alongside notable acts like Viva Belgrado, Martin Human, and Nodie Gonzalez. With 12 artists spanning multiple rock subgenres, the three-day event offers a mix of established and emerging talent from the British and Spanish music scenes.

Castelo Rock is a three-day standalone music festival.