Festival du Roi Arthur

The coolest festival in Brittany! The King Arthur Festival welcomes the best in contemporary music and live performance for three days of festivities and open-air concerts. For its 15th edition in 2026, it returns to the Mafeu plain in Bréal-sous-Montfort (20 minutes from Rennes). Artists from all musical and artistic genres perform, and 60,000 festival-goers enjoy the atmosphere. The festival also features a free area for two days: the Village, where activities, concerts, craft stalls, and Olympic-style games are offered! In this app, you'll find all the information you need to plan your visit and discover the event: tickets, lineup, schedules, practical information, and more. You can also manage your Kartenn'Go credit (cashless payment method) and make purchases in the online shop.

The 2026 edition will take place on August 21, 22 and 23.