Hellfest Festival returns to Clisson, France from June 18-21, 2026, showcasing an epic lineup of metal, rock, punk, alternative, and hardcore artists across four days. The festival features legendary headliners including Iron Maiden, Deep Purple, Megadeth, Behemoth, and Napalm Death, alongside contemporary metal giants like Bring Me the Horizon, Architects, and Mastodon. With 183 artists from 13 countries, Hellfest 2026 offers an extensive celebration of heavy music spanning classic metal icons, hardcore punk veterans, black metal pioneers, and emerging alternative acts. The diverse lineup includes everything from death metal powerhouses like Carcass and Blood Incantation to punk legends The Offspring and Social Distortion, making it one of Europe's most comprehensive heavy music festivals.