Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Seibu-en Velodrome is a velodrome located in Tokorozawa, Saitama that conducts pari-mutuel Keirin racing - one of Japan's four authorized Public Sports where gambling is permitted. Its Keirin identification number for betting purposes is 26: (26 sharp). Seibu-en's oval is 400 meters in circumference. A typical keirin race of 2,025 meters consists of five laps around the course. The Seibu Railway Seibu-en Station provides direct access to the velodrome.