Kibiwott Kandie sets new 1/2 mens WR record

Kibiwott Kandie of kenya ran 57.32 to set a new 1/2 marathon WR, This passing Geoffry Kamworor's year old 
WR of 58.01 by 29 seconds. 
The first 4 finishers ran under the old record      
This pace works out to be 4.24 per mile pace or 66 seconds per each 400m.

their splits were 

13.37 5K
27:25 10K