Mo Farah hopes of winning the 39th London Marathon disappeared at the halfway point as Kenya’s Eliud Kipchoge established himself as the race’s greatest performer.The double Olympic champion, who has attracted negative headlines all week, achieved a personal best mark in just his fourth marathon appearance. Report by Khanomh. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn