What this is
Highest Mountain 2026 is a major outdoor rock and alternative music festival held in Osaka in August 2026. It is part of the long-running RUSH BALL festival series, one of the most beloved and established summer rock festivals in the Kansai region of Japan. The 2026 edition features an impressive lineup of 42 acts including iconic Japanese rock bands BUMP OF CHICKEN, ELLEGARDEN, and Creepy Nuts. The festival has built a loyal following over the years for showcasing both established headliners and emerging Japanese rock and alternative artists.
Who should go
This festival is ideal for fans of Japanese rock, alternative, and hip-hop music who want to experience a major summer festival atmosphere in the Kansai region. The crowd tends to be passionate, knowledgeable music fans ranging from their teens to thirties, creating an energetic and communal atmosphere. It is a great opportunity for expats and music-loving tourists to discover some of Japan's biggest rock acts in a live outdoor setting. Bring comfortable shoes and be prepared for a full day of music in the August heat.
Good to know
Tickets are typically sold through eplus.jp, pia.jp, and Lawson Ticket — all three platforms support foreign credit cards, and Lawson convenience store pickup (combini) is the most hassle-free collection method for visitors without a Japanese delivery address. RUSH BALL is an outdoor standing festival, so expect large crowds, especially near the main stage during headliner sets — arriving early gives you the best position and time to explore food and merchandise stalls. Cash is recommended for food, drinks, and merchandise at the festival grounds, as many vendors do not accept cards. Given the intense Osaka summer heat in August, the festival organisers typically provide water stations and shaded rest areas — make use of these throughout the day. Re-entry policies vary by year, so check the official festival website for the latest rules before attending.
This event was sourced and translated from Japanese by What's On Japan. Details may change — verify with the official source before attending.