There’s a lot of information to gather (and analyze) from 39,000 runners. 

The Chicago Marathon is one of the largest annual marathons in the world, with just over 39,000 runners finishing this year’s race. As you might imagine, there’s a lot of information about the participants that becomes available afterward, including average finish times, average split times for the first half of the race versus the second, how those values compare year over year, the number of finishers by age group and how many runners ran negative splits.

Raymond Britt of RunTriMedia.com has taken all of this data from Sunday’s race and compiled it into 11 informative charts and graphs, found below.

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Chicago Marathon Split and Finish Times 2012 vs. 2013
Chicago Marathon 2013 First and Last 13.1 Split Times
Chicago Marathon 2012 vs 2013 Average Finish Times by Age Group
Chicago Marathon 2013 Average Finish Time by Division
Chicago Marathon 2013 Average First and Last 13.1 Mile Splits
Chicago Marathon 2012 vs 2013 Finishers by Female Age Group
Chicago Marathon 2012 vs. 2013 Finishers by Male Age Group
Chicago Marathon 2013 39,000 Finishers by Age Group
Chicago Marathon 2013 Percent Negative Split Finishers by Age Group
Chicago Marathon 2013 Percent Running Negative Splits -- Men
Chicago Marathon 2013 Percent Running Negative Splits -- Women