The Six Days of Berlin is a six-day track cycling race held annually in Berlin, Germany. The event was first held in 1909. In its first edition, 15 teams of two cyclists each competed in the exhibition hall at Berlin Zoo for glory and, not least, 5000 Goldmarks. Klaus Bugdahl holds the record of victories with nine. Starting from 2017, 6 Days of Berlin was incorporated into the Six Day Series organized by in attempting to rejuvenate the race format.