Keira D'Amato becomes fastest American woman to finish marathon, breaking a 16-year record

Runner Keira D'Amato broke the American record in the women's marathon this weekend. The 37-year-old mother of two ran the Houston Marathon in two hours, 19 minutes and 12 seconds, beating the previous record set in 2006.

D'Amato said on Instagram that she was feeling "confused, pumped, exhausted, proud, in disbelief, sore, more confusion, excited" after her record-breaking race. 

"I could list the roller coaster of emotions for days... but the thought I keep coming back to is how proud I am that I found the courage to give running a shot again and attempt to tackle all this 'unfinished business,'" she wrote. "Goals, similar to marathons, can be scary as crap… but again, with a little help from my friends, we had the courage to try."