He was the surprise winner in the British capital last summer.
Race Results Weekly also provides broader updates on next weekend's event.
Officials are revisiting security arrangements for Sunday's race.
Where exactly the top British runner will pull off the marathon course is still hush-hush.
The fastest marathoner of all time is eyeing the 10K world record in Ottawa.
The Ugandan gold medalist is gearing up for the London Marathon.
A persistent foot injury has sidelined her since 2012.
Briton reportedly cuts deal with organizers to complete first half of London Marathon.
Two-time world champion expects to break the mark in Moscow.
The three-time Olympic champion is suffering from a shin injury.