Postpublished at Mile 26
Women's elite race
It's all going to come down to a sprint for the line!
The crowd on the Mall cheers as the leading three take the final bend.
Here we go...
Kenya's Kelvin Kiptum runs second-fastest marathon to win men's race in course best 2:01.25
Briton Emile Cairess sixth on debut as Mo Farah finishes ninth in his last London Marathon
Dutch debutant Sifan Hassan overcomes injury before sprinting to thrilling women's victory in 2:18.33
Swiss Marcel Hug wins men's wheelchair race in course record 1:23.48 with David Weir fifth; Australian Madison de Rozario wins women's race
73 Guinness world record attempts as record field of almost 49,000 take part
Matthew Henry and Ffion Wynne
Women's elite race
It's all going to come down to a sprint for the line!
The crowd on the Mall cheers as the leading three take the final bend.
Here we go...
Women's elite race
Paula Radcliffe
Former women's marathon world record holder on BBC TV
This is such a test of nerves as we come into the final stages. Who is going to make the surge?
We are in a group of three, and Hassan won't mind this position but the finish of a marathon is very different to the finish on the track.
It is not that easy as assuming the track runner will be able to finish quickest.
Women's elite race
Peres Jepchirchir, Yalemzerf Yehualaw, Alemu Megertu and Sifan Hassan are positioning themselves for the finish.
Ethiopia's Megertu hits from front and defending champion Yehualaw's race looks run.
Hassan is still there!
Women's elite race
Paula Radcliffe
Former women's marathon world record holder on BBC TV
Their drinks are on the right hand side of the road and the leaders have all been locked in at hanging in to the left, where the blue line is that they can follow.
Hassan wasn't prepared to have to make the move over and go back, but she has done well to make it. She's even offering her drink to the others!
There's a real psychological battle now and that may yet come in to play, because some of the other runners didn't manage to get theirs in time.
Women's elite race
We're into the final mile of the women's race as this leading group of five makes it along the Thames towards Big Ben. The world record doesn't look like it's going to happen.
Could Sifan Hassan really do this? As the track athlete she may well have the advantage in the sprint.
Men's elite race
Further back Britain's Emile Cairess has left Mo Farah behind. He's the leading race to be the best British finisher.
This lead group in the women's race includes the Olympic champion and the defending champion, as well as Sifan Hassan who has now got herself right in contention. It's star-studded stuff.
In the men's race, Kelvin Kiptum has kicked at the front amid the confusion of a drinks station.
He has built himself a lead. Will he be able to keep it?
#bbcmarathon on Twitter, WhatsApp on 03301231826 or text 81111 (UK only, standard message rates apply)
Good luck to Katie Blakely from Ashington running for RNIB.
The Fireballs Netball Team
Good luck Simon West, running his first marathon after 20 years of trying to get in! So proud of you!
Simon's mum
A shout out for Ollie Shepard who has this week cycled from John O'Groats to London, and is now doing his first EVER marathon in memory of his brother James and raising money for Cardiac Risk in the Young ❤️
Anon (please leave names on texts)
Women's elite race
Paula Radcliffe
Former women's marathon world record holder on BBC TV
Sifan Hassan is still grimacing but she has worked her way back up to the front.
She is the ultimate racer and she has spoken about how much respect she has for the marathon, wondering what she has signed herself up for, but she has come through so many tunnels of darkness already in this race.
All the emotions are coming out, but her surge has triggered another push from Jepchirchir so she is playing on their minds. The lead group has slowed down as well, which may prove to be a mistake.
Women's elite race
Sifan Hassan has now caught the leaders. There are about 15 minutes to go in this women's race.
Hassan is the 5,000 and 10,000m Olympic champion. This is her first marathon. She looked like she was going to have to pull out injured earlier.
Remarkable.
Men's elite race
Steve Cram
Marathon commentator on BBC TV
Mo Farah is starting to look a little tired now. We can see him checking his watch a little more regularly.
Emile Cairess looks comfortable, he is set for around two hours and eight minutes.
As ever there are a host of celebrities you may be able to spot today, whether you're out on the streets or watching on TV.
Here's a selection below and we'll be hearing about many more throughout the day:
Women's elite race
Paula Radcliffe
Former women's marathon world record holder on BBC TV
Judith Korir and Sifan Hassan are battling it out now to get closer to that lead group.
But the danger for Hassan is that she shouldn't try and close that gap too quickly and exhaust herself, she just needs to do it gradually and not panic.
But she is doing so well, focusing on the road ahead of her, and she looks a lot more comfortable.
Women's elite race
There are four at the front of the women's race now - Peres Jepchirchir, Sheila Chepkirui, Yalemzerf Yehualaw and Alemu Megertu.
Sifan Hassan is not too far adrift, running on her own.
The women's only record is still at risk.
Men's elite race
Steve Cram
Marathon commentator on BBC TV
Emile Cairess is running the race of his life and he is on Mo's shoulder now. It would be an amazing marathon debut if he keeps this going.
The pace has picked up at the front so we are now in a race for the best British athlete. Mo will not give this up easily.
He went off at a pace that raised a few eyebrows but now he is locked in a battle with Cairess.
Women's wheelchair race
The women's wheelchair race came down to a sprint finish...
Men's elite race
Steve Cram
Marathon commentator on BBC TV
Mo Farah has rallied a little bit and we suspected that would happen when he realised he may not be the first Briton to finish.
He has responded to that push from Cairess behind him and it shows that competitive streak in him is still there!
Kelvin Kiptum is looking busy out in the front, maybe wanting to move things on a little bit. There is one pacemaker left in that front group now.
The conditions are hampering things a bit now with the low cloud and the rain coming in.
Men's elite race
"Come on, Mo," are the shouts as Farah makes his way around. He's currently got a lead over around five seconds over fellow Briton Emile Cairess.
They're not going to win the race. The leaders are well clear.
Men's elite race
Steve Cram
Marathon commentator on BBC TV
Mo Farah has slowed down a bit but that's no surprise at this stage. Just behind him is Emile Cairess from Leeds, who is having a great year, so we've got a Battle of Brits on our hands.
He is going very well.
Mo is concentrating hard, but he said he wanted to enjoy this race so perhaps soon we will see him relax and smile a bit more to take it all in.
Women's elite race
Paula Radcliffe
Former women's marathon world record holder on BBC TV
The penny has dropped for those lead four runners now as we see them pick up the pace.
They are working very hard and checking their watches more regularly so they are very aware that they need to get rid of Sifan Hassan from behind them.