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The Shocking Truth: Negative vs. Postive Splits in a Marathon

POSITIVE VS. NEGATIVE SPLITS Which is Best? Q1 Do the elite runners actually run negative splits? Very few elite marathon runners who were trying to qualify for the Olympics in February actually ran negative splits. Of the 108 men's Galen Rupp Meb Keflezighi Jared Ward finishers of the 2016 US -110 seconds -2 -44 seconds Olympic Trials, only 3 men ran negative splits: seconds 1 Place Place 3 Place, 213 For the men, running a negative split correlated with a podium finish; the larger the negative split, the better. Of the the AM 大夫 |149 Women's finishers, only 4 Women ran negative splits: 28th 1st place 2nd Desiree Linden place gth Katja Goldring place Amy Cragg Katie Kellner place -38 seconds -74 seconds -231 seconds -15 seconds For the women, only 2 of the 3 podium spots were run using negative splits (3rd place finisher, place Shalene Flanagan ran a 19 second positive split). The 2nd place finisher ran a more negative split (-74 seconds) than the first place finisher (-38 seconds). The most negative split (-231 seconds) was run by the gth place finisher. 1 From the USATF data; It was there were 56 men (out of 164) and 48 (out of 197) women who started 48 73 F 56 during the marathon trials the race and did not finish Do the fastest runners in a 'traditional' marathon Q2 run negative splits? What about a race where a podium finish is not the goal? The 2015 Chicago marathon. There were over 37,000 finishers on this fast, flat course Chicago is a destination race, and one of the top ten Boston qualifying races in the US. 78 F BOSTON BOSTON 54 F Although the weather was warm overall (a 78 F high), it was only 54 F at the start Of the 9.9% of the finishers BQ'd, but 37408 finishers only 5.7% ran negative splits, clearly running a negative split wasn't necessary to running a BQ. of the 2015 Chicago Marathon, only 2138 (5./0%o) ran negative splits. 5 10 Of the top 10, 100, 250, 500, and 1000 finishers, what percentage ran negative splits? Number of Runners with Negative Splits Тор 10 50% Тор 100 10% 10 If the fastest runners ran negative splits, we'd expect to see a larger percentage of negative splits in the top 100 than in the top 500 Top 250 20 80% Top 500 69 14% Тор 1000 156 16% Percentage of Negative Splits Of the first 1000 finishers, 156 people 15.6% (15.6%) ran negative splits. Of the runners finishing from 1001 to 2000, 120 people ran negative splits (12%). Of the runners finishing from 2001 to 3000, 12.9% 12.9% 12% 10.7% 10% 129 people ran negative splits (12.9%). 8.6% 8.8% 8.8% 7.6% 7.8% 6.6% 5.9% 5.5% 5.6% 5.1% 5.6% 4.9% 4.4% 4.6% 4.6% 40% 3.3% 3.5% 3.1% Place Negative splits aren't reserved for only the fastest runners. Of the last 1000 реоple The 37,435th to finish the Chicago Marathon, only (1% of) runners ran negative. place finisher (the 8th to last finisher) ran a 10 ½ minute negative split. Q3 Do you need to run a negative split to qualify for Boston? Boston Qualifying and Negative Splits Men 20-34 Women 20-34 BQ'd 605 8.7% BQ'd 668 8.1% Ran negative splits Ran negative splits 578 7.0% 424 6.1% BQ'd and ran BQ'd and ran 89 negative splits 14.7% 119 17.8% negative splits BQ Time Total Runners BQ Time Total Runners 3h 5m 6954 3h 35m| 8257 Men 35-39 Women 35-39 BQ'd 286 8.7% BQ'd 276 9.5% Ran negative splits Ran negative splits 215 6.5% 196 6.7% BQ'd and ran 53 negative splits BQ'd and ran 18.5% 49 negative splits 17.8% BQ Time Total Runners BQ Time Total Runners 3h10m 3292 3h 40m 2916 Men 40-44 Women 40-44 BQ'd 314 9.6% BQ'd 238 9.8% Ran negative splits Ran negative splits 181 5.5% 11 4.7% BQ'd and ran BQ'd and ran 37 negative splits 20.4% 32 negative splits 28.3% BQ Time Total Runners BQ Time Total Runners 3h 15m 3268 3h 45m 2422 Looking at the 3 fastest Boston qualifying age brackets for men and women we see Less than 25% of the people who Of the 3 fastest qualifying age brackets, qualified for Boston in the Chicago 75% of the people who ran a negative Marathon, ran a negative split. split didn't qualify for Boston. 75% 25% www.runnersconnect.net Source: http://www.usatf.org/Events---Calendar/2016/U-S--Olympic-Team-Trials---Marathon/Results.aspx http://www.runnersworld.com/olympic-trials/shalane-flanagan-on-dehydration-delirium-and-drama-at-the-olympic-trials https://en.wikipedia.org/wiki/Chicago_Marathon http://findmymarathon.com/weather-detailphp?zname-Chicago%20Marathon&year https://www.chicagomarathon.com/participant-information/course-amenities/ 000 000 00 0001 0000 0006 00081 000 0009 0009L 00i 000 00 000LL 0000L 0006 0008 000L 0009 0009 LO 000 000 0007 000L

The Shocking Truth: Negative vs. Postive Splits in a Marathon

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Do you HAVE to run faster the second half of a race to run a PR or BQ?This free infographic from Runners Connect has so many interesting stats. Marathon runners, this is sure to bring out the ultimate...

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