Sambu clocks 22:01 en route to victory, setting an 8K world record.
The New Zealander is hoping to repeat as B.A.A. Distance Medley champion.
American Aaron Braun hopes to stay on top of the Distance Medley leaderboard.
The fastest marathoner of all-time won comfortably for the second year in a row.
The New Zealand Olympian won by 21 seconds over a stacked field.
New road racing series puts $200,000 in prize money on the line.
Check out these great photos from the inaugural event!