Some 41,003 set off on the 26.2-mile journey from Blackheath to Westminster at 10:00 this morning, sent on their way by Her Majesty The Queen, who pushed the event's famous red button on her gleaming green lawn in front of Windsor Castle as a hooter sounded over the heads of the men's elite field on the far side of London.
Looking a sort of ghostly shadow of his recent self, his stride more laboured than loping, Mo Farah crossed the finish line of the London Marathon in third place, two minutes and four seconds behind victor Eliud Kipchoge, as humbled if not as humanly broken as he's ever been.
Kenya's Vivian Cheruiyot (centre) celebrates after winning the women's London Marathon with second-placed Kenya's Brigid Kosgei (right) and third-placed Ethiopia's Tadelech Bekele in London yesterday. He started his marathon career with a win in Hamburg, Germany in 2013 and lost his only race in Berlin the same year to Wilson Kipsang, who set a world record of 2:03:23.
Kipchoge's wife Grace Sugut who attended the session said the celebrated marathoner had assured her that he would win.
Meanwhile, Great Britain's David Weir won the men's wheelchair race for an unprecedented eighth time.
Representatives of Isuzu EA Ltd said they were proud to be associated with Kipchoge as brand ambassador.
"From day one, it's been an unbelievable journey".
"I wasn't wasting energy, I just needed a drink". Rees crossed in 2:47:55 before waiting to greet his new-found friend with a warm embrace.
The women's marathon was won by Kenyan Vivian Cheruiyot in 2:18:31, after favourites Mary Keitany and Tirunesh Dibaba dropped back, unable to sustain the world-record-chasing pace established early in the race.
The first fire crew on the scene of the Grenfell Tower disaster raised more than £41,000 for children affected by the inferno, while a police officer knifed five times in the London Bridge attack also finished, raising money for the hospital that saved his life.
The 39-year-old, from Liverpool, who has run more than 15,000 miles in an attempt to emulate the character from the 1994 Tom Hanks movie, said: "I can run like the wind blows".