Mebrahtom "Meb" Keflezighi (; is a retired American long distance runner. He is the 2004 Olympic silver medalist in the marathon and finished in fourth place in the 2012 Summer Olympics. He won the 2009 New York City Marathon on November 1, 2009, and the 2014 Boston Marathon on April 21, 2014, becoming the first American man to win each race since 1982 and 1983, respectively. Keflezighi is a graduate of UCLA, where he won four NCAA championships competing for the UCLA Bruins track and field team. He came in fourth in the 2014 New York City Marathon on November 2, 2014, eighth in the 2015 Boston Marathon on April 20, 2015, and second in the 2016 U.S. Olympic Team Trials to qualify for the 2016 Summer Olympics.

The Men's marathon at the 2004 Summer Olympics took place on August 29 in the streets of Athens, Greece where one hundred and one athletes from 59 nations competed. The event was won by Stefano Baldini of Italy, the nation's first victory in the event since 1988 and second overall. The United States reached the podium in the event for the first time since 1976 with Meb Keflezighi's silver. Vanderlei de Lima took bronze, Brazil's first-ever medal in the men's marathon.