The horse racing was held by a pair of horses (left side, right side) with ten races to compete for winning the race, obstructing norijiri or the opponent horse itself.
2騎1組（左方・右方）で計10番の競走を行い一定区間の間に相手の乗尻行為あるいは馬そのものの進行妨害しながら、先着を競った。