The duo hit the halfway mark in 1 : 16 : 52 .
Haji could n't hold on to the pace for much longer and was 1 : 30 behind Jepchumba at 30km .
The duo hit the halfway mark in 1 : 16 : 52 but Haji could n't hold on to the pace for much longer and was 1 : 30 behind Jepchumba at 30km .