Olympian Vernon , 30 , broke 2015 winner Thompson at the eight - mile mark .
Olympian Vernon , 30 , held his nerve for the remaining five miles , clocking 63.32 , with Thompson 22 seconds behind with a time of 63.54 .
Olympian Vernon , 30 , broke 2015 winner Thompson at the eight - mile mark and held his nerve for the remaining five miles , clocking 63.32 , with Thompson 22 seconds behind with a time of 63.54 .