Women Marathoners in the US - Percentage

From StatWiki

Women accounted for 41 percent of U.S. marathoners in 2009, up from 10 percent in 1980.

Percentage of U.S. Marathoners Who are Women

1980	10%
1995	26%
2000	38%
2009	41%

[edit] Source

[Running USA, Idaho Statesman, 23 July 2010, B6]