How it works
Runners make bunched standing starts and can break immediately for the inside. The number of laps depends on the position of the water jump – inside or outside the track’s second bend – but competitors must always clear 28 fixed barriers and seven water jumps during a race’s duration.
The men’s barriers are 36in (91.4cm) high, the women’s 30in (76.2cm). The water jump’s landing area is 12ft (3.66m) long and 70cm at its deepest.
This event has its origins in Britain; runners would race from one town’s steeple to the next, jumping obstacles such as streams and low walls. The current event can be traced to the two-mile steeplechases run at Oxford University in the mid-19th century. It was made a track event, with barriers, at the 1879 English Championships.
The current format has been contested by men – initially over varying distances – in every Olympic Games since 1900. The women’s event was introduced as recently as 2008.
Did you know
When Amos Biwott became the first Kenyan to win the Olympic gold, in 1968, he did so by leaping over the water jump without putting his foot on top of the barrier.
Kenya is the dominant nation, winning the last six men’s Olympic titles and taking 13 of the 18 medals on offer in those races. Qatar and Bahrain are also strong, although their success is chiefly obtained via Kenyan-born athletes.
Russia and Kenya are the strongest nations in the fledgling women’s event.