In a deep American field that included a past champion, an Olympic marathoner, and a past American record holder, it was Jess McClain who crossed the line first at today’s Boston Marathon ...

At 37, she ran a stunning 2:19:12 to break the American record. And at 40, she’s leading the most-impressive field of American women in history into this month’s Boston Marathon.

Among the 14 American women runners who have sub-2:26 personal bests, D’Amato leads with a 2:19:12 she ran in Houston, where she broke the American marathon record at the time.