Deena Kastor placed fourth overall.
Arizona native betters Sally Meyerhoff's mark by more than a minute.
The race also serves as the U.S. 10-mile championship.
Check out these great shots from the annual event!
The two runners also won the B.A.A. Distance Medley, pocketing $100,000.
Six runners are in contention for a lot of money on Sunday.
Six figures are on the line in the annual race.
There were 10,612 finishers under muggy conditions at 40th edition.
Star-studded lineup will take to the streets of Boston later this month.