It's a big weekend for former Marblehead High School star runner Shalane Flanagan, who is in London for the Olympic marathon on Sunday.
This is Flanagan's third Olympics, and she's been on the podium before, winning a bronze medal in the 10,000 meters in 2008.
But Amby Burfoot of Runners World magazine says it will take the race of Flanagan's lifetime to bring home a marathon medal.
"The competition is unbelievable," Burfoot said. "It's the best women's marathon field eve assembled. There are seven women in the field who have run under two hours 20 minutes."
Sunday's race starts at 6 a.m. EST.
This program aired on August 3, 2012. The audio for this program is not available.