Aftershock Festival 2025 Rumors. The 12 th edition of the annual festival welcomed 160,000 music fans from all 50 states and 30 countries around the world, retaining its title as the west coast’s largest rock. Get all your questions about aftershock answered.

What do you guys know about babymetal at the aftershock festival in october in sacramento? Secure your spot to west coast’s largest rock & metal festival.