Formerly the Blancpain GT Series Endurance Cup (2016-2019) and the Blancpain Endurance Series (2011-2015), this is a sports car racing series developed by the SRO Group and the Royal Automobile Club of Belgium (RACB) with approval from the FIA. It features grand tourer racing cars modified from production road cars complying with the FIA's GT3 regulations. The series's goal is to be an endurance racing championship for GT3 cars, similar to the European Le Mans Series which uses GTE cars and Le Mans Prototypes. wikipedia