Mini-Brevet (2017) des Audax Club Schleswig-Holstein:

Official route of the cycle marathon. This route follows the long distance of a mini-Brevet, an organized endurance ride of the Audax Club. Designed for racing bikes and randonneurs, this is an extreme endurance test. The route is almost entirely asphalted and leads on a huge loop through Schleswig-Holstein. This region is famous for its flat terrain. The main difficulty comes not from the meters in altitude, but from the enormous distance and the relentless, strong wind from the coast.