Edna Kiplagat of Kenya won her first Boston Marathon title, pulling away from the women's lead pack at around mile 20.
She finished in 2 hours, 21 minutes, 52 seconds on a sunny and warm Patriots Day after running the last several miles by herself.
At mile 20, Kiplagat had a split of 5:01 for her last mile.
Kiplagat, 37, has won marathons in London, New York and Los Angeles and two IAAF world championships. In the London Marathon in 2012, she broke 2:20, finishing second in 2:19:50. She is a police woman in Iten, Kenya, according to her race bio.
She broke away from a pack that included Jordan Hasay of the United States, who is making her marathon debut. Hasay was third behind Rose Chelimo of Bahrain in 2:23. Hasay has the fastest time by an American woman in a debut marathon.
American Desi Linden was part of the lead pack midway through the race but fell back shortly before Kiplagat made a push. Linden, a two-time Olympian, finished second in Boston in 2011.
Women's leader Kiplagat passed water table, went back, grabbed the wrong bottle, put it back and then kept going. She has a 28 sec lead... pic.twitter.com/uvoGNmAp7i— FloTrack (@FloTrack) April 17, 2017