Kenyans

Kipchoge, who skipped last year's race to attempt a sub-two-hour marathon in Italy, could not break Dennis Kimmetto's world record as high temperatures made running conditions difficult in the English capital.

Women's favourite Mary Keitany attempted to break Paula Radcliffe's mixed race record -- assisted by male pacemakers -- but the Kenyan struggled late on in the race, eventually finishing fifth and unable to add to her three London titles.

That allowed Cheruiyot in to take her first London crown, having won her first career marathon in Frankfurt only in October.

Closing out a historic visit to the land of his father's birth, Obama said Kenya has come so far in just his lifetime, but can go even further.

"You can choose the path to progress, but it requires making some important choices," he said in a speech to several thousand Kenyans packed into an indoor arena here in Kenya's capital, a normally bustling place that largely has been on lockdown during Obama's stay.