Vienna – The Danube Island Festival 2026 will take place from July 3rd to 5th. As usual, the big event does not exist on the last weekend in Juni. The reason for this is that the Austria-Grand Prix will take place in Spielberg on June 28th next year. “We do not want to compete with another major event,” said Jörg Neumayer, only recently recently state party secretary at the Vienna SPÖ, in the APA conversation to make an appointment.