His mile split between 20 and 21 was 5 : 12 , but he maintained his considerable lead .
As you would expect , Meb Keflezighi slowed considerably in the mile up Heartbreak Hill .
Meb Keflezighi 's mile split between 20 and 21 was 5 : 12 , but he maintained his considerable lead .
As you would expect , Meb Keflezighi slowed considerably in the mile up Heartbreak Hill .