Negative split

It is defined by the intentional setting of a slower initial pace, followed by a gradual or sudden increase of speed towards the end of the race.

[1] Alternate strategies include even splitting (racing at a steady pace) or sit and kick (also known as a sprint finish).

Negative split strategies are also used in swimming (including Janet Evans's 1988 Olympic gold in the 400 m freestyle)[3] cycling, triathlon and horse racing.

If the runner falls behind and runs the first part more slowly than intended, they can replace their strategy with a negative split to make up for the time lost earlier in the race.

Considered by many to be among the greatest runners of all time,[11] Kenenisa Bekele has employed negative split strategies in many of his races and all of his world records.

[12] One of the most noted runners in the United States, Steve Prefontaine used negative splits to train and compete in high school.

[15] Galen Rupp, an Olympic silver medalist, set a new U.S. record in the 5000-meter race, hitting 13 minutes 1 second at the Boston University Multi-Team Meet.