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Number of subhour finishers for 10-km races over time by sex. Aggregate data (heavy line) displayed on the right side Y-axis. For both men and women, there are increasingly more subhour finishers over time. Note the change in 2010 from the change in timing system for the AJC Peachtree Road Race, which was not included in the analysis but is displayed only to show the extent of change.
