Americans Are Faster Than Ever. So Is the Rest of the World.. Marathon Running, Running, Chicago Marathon, New York City Marathon, London Marathon, Boston Marathon, NAZ Elite, Chepngetich, Ruth (1994- ), D'Amato, Keira (1984- ), Flanagan, Shalane, Linden, Desiree (1983- ), Seidel, Molly (1994- ), Sisson, Emily (1991- )