Defending champion Amos Kipruto, Valencia Marathon champion Kelvin Kiptum and Geoffrey Kawmoror, Ethiopians Birhanu Legese, world champion Tamirat Tola and the fastest man in the pack, Kenenisa Bekele, crossed 10km in 29:12.
The pack of nine athletes led by Kiptum went past 15km in 43:51 and 20km in 58:31 before they hit the halfway mark in 1:01:40 as Bekele started to fall away from the pack.
Kiptum took eight athletes including Kipruto and Kamworor through 25km in 1:12:53.
Then Kiptum went for the significant move just after the 30km mark to open a 10 seconds lead from Kamworor.