The 25-year-old Sambu won Sunday's race in a world-leading time of 27:25.
Scenes from the fourth annual BAA 10K, won by Stephen Sambu and Mamitu Daska.
Sambu clocks 22:01 en route to victory, setting an 8K world record.
Check out these shots of Sunday's top runners!
Kim Smith and Stephen Sambu capture B.A.A. Distance Medley crowns.
He says he loves road racing.
Thousands turned out in Boston for the first road race since that city's marathon.
Arizona native betters Sally Meyerhoff's mark by more than a minute.
Liberty University's Sam Chelanga captured the men's individual title.