While horse racing in Japan has a strong image of gambling, it is also respected as an equestrian sport. When viewed from the category of sports, the Tokyo Race Track boasts a capacity of 225,000, many-fold larger than those of other sports. For example, the largest soccer stadium in Japan, Saitama Stadium 2002, has a capacity of 63,000 people — less than one third. Actually the horse track has never actually achieved a gate of over 200,000 people with the largest, for a race in 1990, reaching around 195,000 people.
If you don’t bet, you can enter and watch the races for just 200 yen ($2). Moreover you can experience riding a horse or see the horse racing museum free of charge.