Participating racers will compete in 22 teams of nine riders.

Each nation may bring a team of four riders and two individuals.

Great Britain sent a team of five riders to the Games.

Race officials are lining up 16 to 18 international teams of seven riders each.

The twelve teams of three riders raced the course without competition in the qualifying round.

Dressage: 13 teams of 3 riders each, and 10 individuals.

The competition involves teams of three riders representing their nations.

With teams of only six riders, it is also a notoriously difficult race to control.

Mexico sent a team of three riders to the Games.

Twenty-two teams of 9 riders each will be invited.