The Audi MedCup was a sailing competition which began in 2005 and turned into the world’s leading regatta circuit.

The circuit, which was sponsored by the German car manufacturer Audi, ran annually throughout Southern Europe and attracted some of the best sailors in the world.

The five-regatta circuit lasted five months starting in May and culminated in September.

The circuit was based on a box rule where every boat, in theory, had a similar design.

There is some leverage in the rule in that deck layouts can be adjusted and sails can be crafted differently but the main design features such as weight, beam, and mast height and sail area are restricted to this "box rule" standard.