I am, for one, approve of using animals for our amusements. Yes, I am taking that trip straight to Heat Island. But anyway, here is Animal Racers PE, a map where two players can mount horses and race against each other throughout an exciting obstacle course.
All credit goes to StrikerTeam
Although it is built for 2 players, more can join if you spawn more horse. After that, get your horses to the starting line and start the countdown. The winner of Animal Racers PE is obviously the first to reach the finish line. The obstacles are meant to make the race a lot more fun.