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Crowding at the front of marathon packs

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Sanjib Sabhapandit1, Satya N Majumdar1 and S Redner2

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Figure 1

Figure 1. Distribution of all finishing times (smoothed over a 20-point range for visual clarity) for the Boston, Chicago, and New York marathons, 2000–2007. Notice the peaks at 3 h in all the data, the prominent peaks at 4 h for the Chicago and New York marathons, and the secondary peaks at 3:10, 3:20, and 3:30 for the Chicago marathon. The dashed curve shows the distribution of equation (4), with parameter values as given in the text. The inset shows the data in the range of 2:08–2:45.



Figure 2

Figure 2. Distribution of the average time gap gk between the kth and (k + 1)st finisher for: the US (\mbox {\opencirc } ) and the European ( + ) marathons cited in the text. For the US marathons the first 10 000 gaps are shown, while the first 100 gaps are shown for the European marathons. The dashed line has a slope of –1, as given by equation (5).




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