Watch our finish-line camera at top of page to spot your friends and family
Kenya's Sabastian Sawe becomes first to break two-hour mark in race conditions
Second-placed Yomif Kejelcha also breaks mark
Ethiopia's Tigst Assefa sets women's only record for second successive year
Marcel Hug wins eighth men's wheelchair title and sixth in a row, as Catherine Debrunner defends women's title
The good news for AP McCoy and Matt Hampson is they have already crossed Tower Bridge!
As they crossed, Hampson told BBC One: "I'm feeling great. Unbelievable. It is an amazing day. I am gobsmacked at how amazing it is. I have got a special team who are doing amazing things."
Remember, you can look out for any friends and family crossing the Tower Bridge on the dedicated stream here.
Image source, Getty Images
Image source, Getty Images
Image source, PA Media
AP McCoy
Former Grand National winning jockey on BBC One
I did say to Matt Hampson I could have killed him for the fact he has got me to do a marathon.
And alongside Matt Hampson running the London Marathon is former Grand National winning jockey, AP McCoy, who told Gabby Logan a few years back a marathon wouldn't be on his agenda... Giddy up, AP.
Matt Hampson's 'Everest' at the London Marathon
Former Leicester Tigers prop Matt Hampson was left paralysed from the neck down when a scrum collapsed during a training session with the England Under-21 side.
He'll be taking part in the London Marathon in a specialist racing chair, that will be pushed by a team of runners throughout the race.
He's been speaking to BBC Radio 5 Live about how he feels: "I am feeling great. I. am excited and a little bit apprehensive because it is the unknown for me.
"There are quite a few factors that we can't predict and that is always a bit scary in a way. I am excited, that is the overwhelming feeling.
"The chair is a really robust bit of kit, which of course it needs to be for someone of my stature. I've got a team of four people pushing me round as well. They've all gone through training so they know what to expect and what to do in an emergency scenario.
"I use ventilator to breath, that is what essentially keeps me alive because I am on that 24/7. I have to carry an extra ventilator and batteries to keep that up and running and in case of an emergency. The total weight of me, the chair and all the kit is probably pushing on for close to 150kg at least.
"Within the rules we can have two people pushing at any one time, but we're going to have one person pushing because that works better for us and we'll rotate around."
Read more about Matt Hampson's life-changing injury 20 years on.
Jamie Reid
BBC Radio London
Image source, FTD BrothersJordan Adams is raising awareness of frontotemporal dementia, which claimed his mum at 52. Adams, 30, is also a carrier of the genetic mutation that causes it.
“I know in the next 10 to 15 years I’ll likely lose my life to the same thing,” he tells Radio London. “Today is for everyone affected - we’re making dementia visible.”
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To the ADAMS BROTHERS from Redditch. ALL OF REDDITCH IS WITH YOU TWO GREAT LADS.
Rob, Redditch
Paula Radcliffe
Former women's marathon world record holder on BBC One
Jordan Adams with a 25 kilo fridge on his back - that is phenomenal.
Running a marathon with a 25kg fridge on his back
'Not a matter of if, a matter of when' - The brothers running before dementia diagnosis
Jordan and Cian Adams, the 'FTD Brothers', have been diagnosed with a faulty gene that will lead to them being diagnosed with early on-set dementia.
After the 2026 London Marathon, which Jordan will run carrying a 25kg fridge, the pair will sprint across all 32 counties of Ireland in just 32 days.
They are running in memory of their mum, Geraldine, who died of a rare form of dementia at just 52. Having both tested positive for the same gene, the brothers are racing to find a cure before their own symptoms begin.
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David and Sergio, you’ve already shown incredible strength. Today, every step carries your daughters’ love forward. We are all behind you, every moment. To every runner, volunteer, and staff member of the London Marathon, good luck. Your dedication is phenomenal. Together, you make something truly powerful and unforgettable today.
Liam Howard, Southport
The Southport dads running the London Marathon
Sergio Aguiar and David Stancombe are running the marathon again in memory of their daughters, Alice and Elsie, who were killed in the Southport attacks in 2024.
Sergio and David ran the event last year separately but this year will do so together.
"Last year we ran it as two dads, and this time around we're running it as two friends," David said.
"We wanted to run it together because of how close we've got."
After finishing the London Marathon last year, Sergio decided to do six of the world's major marathons in 12 months for the foundation he set up in his daughter's name, Alice's WonderDance.
He has gone on to complete marathons in Berlin, Chicago, New York, Tokyo and Boston.
With Sergio the more experienced marathon runner, the obvious question is whether David can keep up.
Sergio joked: "If he goes faster than me, I'm going to hold him."
"That's never going to happen," David replied, adding they have come to an agreement. "If Sergio slows down, I'll speed up," he laughed.
Image source, Getty ImagesThe world of athletics is still reeling from what we have seen already today.
One. Fifty-Nine. Thirty.
Sabastian Sawe will go down in history. For more on his record-breaking feat and the other elite winners have a read of this from my colleague Harry Poole.
We'll continue to react to that throughout the afternoon but our main focus on this page is going to switch to the thousands and thousands of those just like us running the marathon for their own reasons.
There are so many stories to tell. We'll share as many as we can and keep those good luck messages coming in.
Women's elite race
Image source, Getty ImagesWomen's elite winner Tigst Assefa, speaking to BBC One: "I am so happy to win again. I want to thank god for giving me this victory. To repeat my victory means even more.
"The happiness I feel is welling up inside of me. It was one of my plans coming into this competition to break my own world record from last year's race. To do that has brought me a lot of satisfaction.
"I want to thank Hellen Obiri and Joyciline Jepkosgei for making it a great competition. I feel very lucky. i want to thank them on their success. They also ran great races."
Women's elite race
Just before Sebastian Sawe made history, Ethiopian long-distance runner Tigst Assefa won the women's elite race.
Assefa claimed her back-to-back London Marathon title and also set a world record.
I think it's fair to say, today is going to live long in the memory for many long-distance fanatics.
Assefa sets new world record to win London Marathon for second year in a row
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Watching from Nigeria. This was so impressive and a brilliant finish from Sawe.
Joshua, Nigeria
Three men have just run inside the old world record (2:00:35). That's absolutely amazing. Sebastian Sawe, congratulations!
David, Northants
Steve Cram
BBC One commentator and former world champion
Image source, Getty Images[The record] crept up on us. It was just surge, surge, surge and it was absolutely phenomenal.
He didn’t just break it. Remember when Eliud [Kipchoge] broke it with all that help, all those laps, all the science and technology that went into it. Wow! I’m lost for words, genuinely.
I’m still getting over this. There are things that happen in sport and you want to be there to see history being made. It is a privilege and it is incredible.
We said it was a day for records but I don’t think in our wildest dreams we could have foreseen this.
Here's what the man himself had to say. Just look at that smile...
'I am so happy' - Sawe reacts to winning London marathon
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What a morning, what a headline: 'I came, I Sawe, I conquered!'
Michael, Newcastle
The wife and I were screaming our heads off urging Sawe on in the last 600 metres. What a day! A moment in history. I’m glad I saw it.
Paul, Isle of Wight
Paula Radcliffe
Former women's marathon world record holder on BBC One
'Absolutely incredible!' - Sawe breaks sub 2-hour marathon world record in London
The goalposts have literally just moved for marathon running and where you benchmark yourself as being world class. I did think that mark could be beaten but not today.
It is a lesson to everybody out there. We say don’t go out too fast and they went out smartly and paced it really well. Smart racing brought it to the line.
Steve Cram
BBC One commentator and former world champion
Sabastian Sawe was injured in the autumn and only started training properly in January they said and realised in February he was going to be fit enough to come back to London and perform well. The question marks were still here and he had a great field against him.
Absolutely incredible, I’ve never seen anything like that. What a finish. You would say that is unbelievable but we’ve just seen it.