The marathon world-record holder is gearing up for a fast race in Frankfurt.
Two journalists discuss the answer to this question.
The fastest marathoner of all-time misses world-record.
We caught up with the world's fastest marathoner, who returns to the roads this weekend in Berlin.
The fastest marathoner of all-time will square off against a stacked field.
It's the most wonderful time of the racing year.
The fastest marathoner in history says he has let bygones be bygones regarding his Olympic snub.
He's looking for an impressive time on the flat course.
He admitted he was happy to have beaten his rival.
The fastest marathoner of all-time won comfortably for the second year in a row.