How many hurdles are in the 400m hurdle race?

Q. How many hurdles are in the 400m hurdle race?
Ten

• The 400 metres hurdles is a track and field hurdling event. The event has been on the Olympic athletics programme since 1900 for men and since 1984 for women.
• Athletes run once around a 400m track and clear ten evenly-spaced hurdles in the process.
• The official height of the hurdles was set to 91.4 cm (3 feet) for men and 76.20 cm (2 ft, 6 inches) for women.
• The hurdles were now placed on the course with a run-up to the first hurdle of 45 metres, a distance between the hurdles of 35 metres each, and a home stretch from the last hurdle to the finish line of 40 metres.