Matsudo Velodrome
Introduction Matsudo Velodrome at night is a velodrome located in Matsudo, Chiba that conducts pari-mutuel Keirin racing - one of Japan's four authorized  where gambling is permitted. Its Keirin identification number for betting purposes is 31# (31 sharp).Matsudo's oval is 333 meters in circumference. A typical keirin race of 2,015 meters consists of six laps around the course.
See also *List of cycling tracks and velodromes
References
External links * Matsudo Keirin Home Page (Japanese)* keirin.jp Matsudo Information (Japanese)