Many marathon champions have repeated their feats in following years. The record for most repeated championships stands at 10, held by Ernst van Dyk in the Men's Wheelchair division. In the Men's Open division, Clarence DeMar holds the distinction of most wins with seven, and Catherine Ndereba tops the Women's Open division with four. The United States has had more winners than any other country, followed by Kenya and Canada. The United States and Canada dominated the early years of the race, and it was not until the 36th race, in 1932, that someone from outside North America, Paul de Bruyn of Germany, won the race. During the period from World War II through the 1980s, there was much more national diversity among Boston Marathon champions, but the last two decades have seen Kenya emerge as the dominant nationality, especially in the Men's Open division, which (as of 2015) has been won by Kenyans in 19 of the past 25 years.

Is it true that has a woman ever won the boston marathon?
yes