Negative split

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A negative split is a racing strategy that involves completing the second half of a race faster than the first half. 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). Conversely, the act of completing the first half of a race faster than the second half is known as a positive split. [2]

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The strategy of negative splitting has been documented in competitive running since the early 20th century. Runners such as Steve Prefontaine, Wilson Kipsang and Galen Rupp have used them in races.

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. [4] [5] [6]

Similar strategies

The strategies discussed below are easily confused with negative splits, because the racer can appear to be negative splitting when they really are not.

Even splitting

Even splitting is a racing strategy where the runner aims for a precise lap time. To do this the runner must run the same split for every lap (or other distance considered a split) to hit the time. [7] For example, if a runner wants to finish a 1600-meter race in 4:40, on a 400-meter track, the runner would have to hit 70 seconds a lap, with each lap counting as a split to achieve this goal. To use this strategy the runner must run their own pace and not get pulled ahead or behind by the other competitors. If the runner falls behind and runs the first part more slowly than intended, they can replace strategy with a negative split to make up for the time gained earlier in the race.

One of the best examples of even splitting comes from Dave Wottle in the 1972 Olympics in the 800-meter finals. Wottle ran a 1:45 for that race, even splitting 26 seconds for each 200-meter split. [8] [9] Because the other runners in the race ran so fast at the beginning and slowed at the end, Wottle's finish was much faster.

In 2019, Eliud Kipchoge attempted to perform even splitting in the Ineos 1:59 Challenge, in which he attempted to run a marathon distance in under two hours. In order to achieve this time, each 5km split would need to be completed in 14 minutes 13 seconds, producing a time of 1 hour 59 minutes 59.5 seconds. In reality, all of the 5km splits were run within five seconds of each other, with every split past the 10km point being between 14:12 and 14:14. [10] This meant that the race was not run as an even split, but that there was only a 0.5% difference between the slowest and fastest splits, with no obvious pattern of slowing down or speeding up as the race progressed.

Sit and kick

This strategy, also known as a sprint finish, relies on the runner hanging with the lead pack for the majority of the race, not pushing the pace or trying to break away, until the bell lap or final section of the race. The runner then makes a kick—increases pace—with all their remaining energy. This strategy relies on the runner having a better kick than the rest of the field. Sitting and kicking can also be confused with negative splitting, especially if the runner employing this strategy makes their kick move earlier than the last 300-meters or so of a race.

Athletes using negative splits

Kenenisa Bekele

Kenenisa Bekele Bekele Smiling.jpg
Kenenisa Bekele

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.

Most notably, every kilometer in his 5000 meter world-record run of 12:37 was about one second faster than the last. His splits per kilometer were 2:33, 2:32, 2:31, 2:30, 2:29. [12]

Steve Prefontaine

One of the most noted runners in the United States, Steve Prefontaine used negative splits to train and compete in high school. In one example, Prefontaine's goal was to run a 9:44 two-mile, requiring a 73-second pace per lap. Instead of running a flat pace, Prefontaine's coach, Walt McClure, had him run the first six laps at 75 seconds per lap. This put the runner 12 seconds over the pace, at 7:30, at the end of the sixth lap, leaving the last two laps to make up time by negative splitting a 70-second seventh lap and then a 65-second final lap. [13]

Wilson Kipsang

Wilson Kipsang Wilson Kipsang Kiprotich 2012 London Marathon.jpg
Wilson Kipsang

Kipsang has the third fastest marathon time, at 2 hours 3 minutes and 23 seconds, at the 2013 Berlin Marathon. [14] Kipsang ran a year earlier, at the 2012 Honolulu Marathon, finishing with a time of 2 hours 12 minutes and 31 seconds. [15] He won this marathon by negative splitting. Kipsang came through the half waypoint in 1 hour 7 minutes and 7 seconds. He finished the second half of the marathon in 1 hour 5 minutes and 24 seconds. [15]

Galen Rupp

Galen Rupp Galen Rupp Celebrates 2012 Olympics (cropped).jpg
Galen Rupp

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. [16] He negative split the race, with his first mile at 4 minutes and 14 seconds, the second mile at 4 minutes and 12 seconds, the third mile at 4 minutes and 4 seconds, leaving his final 200 meters in 30 seconds. [17]

Advantages of negative splitting

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2014 London Marathon

The 2014 London Marathon was the 34th running of the annual marathon race in London, England, which took place on Sunday, 13 April. The men's elite race was won by Kenyan Wilson Kipsang Kiprotich and the women's race was won by Kenyan Edna Kiplagat. The men's wheelchair race was won by Switzerland's Marcel Hug and the women's wheelchair race was won by American Tatyana McFadden. Kipsang and McFadden set course records.

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Pacing strategies in track and field are the varied strategies which runners use to distribute their energy throughout a race. Optimal strategies exist and have been studied for the different events of track and field. These optimal strategies differ for runners in sprint events, such as the 100 meters, runners in middle-distance events, such as the 800 meters or the mile run, and runners in long-distance events, such as the 5000m or marathon. Additionally, pacing typically differs between different styles of races. For instance, in a time trial, where the goal of a racer is simply to run the fastest time, participants will typically employ the aforementioned optimal pacing strategy. However, in a championship race, where the goal of the racer is to win, the pace is typically slow in the beginning of the race and gradually speeds up for a sprint finish, often meaning the race is run with a negative split. Typically, to run a world record, the runner must employ a near-optimal pacing strategy.

2015 London Marathon

The 2015 London Marathon was the 35th running of the annual marathon race in London, England, which took place on Sunday, 26 April. The men's elite race was won by Kenyan Eliud Kipchoge and the women's race was won by Ethiopian Tigist Tufa. The 2015 IPC Athletics World Championships marathon events were also held during the race. The men's wheelchair race was won by Josh George from the United States and the women's wheelchair race was won by American Tatyana McFadden. McFadden set a course record for the second year running.

A kick in a running race is the ability of some athletes to sprint at the end of an endurance-oriented race. For those who possess the ability to kick, it is a strategic weapon. For those with the liability not to possess a kick, they must seek different strategies to anticipate and diminish their opponent's kicking power, usually by a long extended surge to break away or exhaust their opponent well ahead of the finish of the race. Similar to a Sprinter in cycling, a kicker has a finite distance they know they are able to sprint, making their strategy to be in the ideal position at that distance to be able to utilize that speed. Sprinting too early could lead an athlete to tie up, a form of muscle cramp that debilitates a racer from continuing to kick. Thus team tactics might also intentionally or not, box a kicker, meaning to position other competitors to their outside, to disrupt their positioning and timing. Of course, as the finish is nearing and all athletes are straining, this becomes more difficult to accomplish deliberately.

The 2019 Chicago Marathon was the 42nd annual running of the Chicago Marathon held in Chicago, Illinois, United States on October 13, 2019. The men's race was won by Kenyan Lawrence Cherono in 2:05:45 while the women's was won by Kenyan Brigid Kosgei in 2:14:04, a world record by 81 seconds. The men's and women's wheelchair races were won by Daniel Romanchuk and Manuela Schär in 1:30:26 and 1:41:08, respectively. More than 45,000 runners completed the race.

References

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