Kenya's Peres Jepchirchir breaks women's-only marathon record with top four in women's race all breaking Mary Keitany's record from 2017
Kenya's Alexander Mutiso Munyao wins men's race with Great Britain's Emile Cairess third
Switzerland's Marcel Hug wins men's wheelchair race for fourth successive year with GB's David Weir third
Switzerland's Catherine Debrunner wins women's wheelchair race
Stream of finish line available at top of page
#bbcmarathon, WhatsApp on 03301231826 or text 81111 (UK only, standard message rates apply)
Good luck to Joe Kelly from Carshalton Boys Sports College running for the Spinal Research charity. Go Joe!
From Jackie & all at CBSC
Good luck to Tillie Freeman who is running her first London marathon with her uncle Stewart , you guys will smash it.
Love Tracy, Alan & Daisy xxx
Mike Peter
BBC Sport journalist, running the Marathon
Image source, Mike PeterMeet some of the people gathering around the 3:45 pacer in red wave 3. Jess is our fearless leader sporting the flag. Not long us for us now, see you in a few hours...
Men's Wheelchair race
Baroness Tanni Grey-Thompson
Six-time London Marathon wheelchair champion on BBC TV
It's a hugely tactical race at the moment. Tomoki Suzuki keeps leading and dropping off. It feels very much about who's going to win today rather than the time they're going to set.
David Weir is being very smart, he's just sitting on Marcel Hug's wheel and preserving energy.
Women's elite race
Steve Cram
Athletics commentator on BBC TV
The women are clicking along at a pace. All of the top names are in there. They haven't slowed down and this is very, very quick.
Women's elite race
This women's-only London Marathon record is well and truly on in the elite race.
Paula Radcliffe's record time by a woman - a 2:15:25 in a mixed race - is also under threat.
There's a bunch at the front, including Ethiopia's Tigst Assefa and Kenyan trio Brigid Kosgei, Ruth Chepngetich and Olympic champion Peres Jepchirchir.
Image source, Getty ImagesA Dr Who, various comedians, Princess Anne (kind of), Olympians and TV presenters are among the famous faces running the London Marathon today.
Here are a few people to watch out for:
Men's elite race under way
Kelly Holmes gets the men's elite race under way!.
They charge off down the road and thousands and thousands follow behind.
There's the club runners, those in fancy dress and everything in between.
Good luck everyone!
Men's elite race
Steve Cram
Athletics commentator on BBC TV
Callum Hawkins dreams of going to Paris, he probably knows it's not on the cards but he's so pleased to be back here after so many injuries.
Mike Peter
BBC Sport journalist, running the Marathon
Image source, Mike PeterThe next test for today's competitions is the queue for the portaloos. Masses line one side of the park, but no-one wants to get caught short on the course so the lines wind back a fair distance, packed with runners hoping they still fit a warm-up in (and then maybe a second trip to the loo).
Men's elite race
But before the start of the race, tributes are being paid on the start line for last year's winner Kelvin Kiptum - the marathon world record holder- who died in a car crash earlier this year.
There's a lovely period of applause for the Kenyan.
This is the five-minute warning for the start of the men's elite race and the masses which will follow behind them.
My friend Jane Crosby is running for Bluebell Wood. It is a children’s hospice in South Yorkshire. They helped her and her family when her five-month-old grandson needed end of life care.
Jude
Image source, BBC SportWomen's elite race
Steve Cram
Athletics commentator on BBC TV
It's been quick but we expected that for the first three miles. It has settled down a bit now.
If you are just interested in the elite races today you can watch an uninterrupted feed by clicking the watch & listen tab above.
Men's Wheelchair race
Baroness Tanni Grey-Thompson
Six-time London Marathon wheelchair champion on BBC TV
There's a lot of cat and mouse going on at the moment. No one is particularly wanting to do too much at the front.
At the moment, my money is on Marcel Hug.
Wheelchair races
David Weir, chasing a ninth win on the streets of London, has caught the leaders Marcel Hug and Daniel Romanchuk in the men's wheelchair race. They've just breezed over Tower Bridge.
Catherine Debrunner is still in a race of her own in the women's event.
#bbcmarathon, WhatsApp on 03301231826 or text 81111 (UK only, standard message rates apply)
Good luck to my brave and beautiful daughter Connie Parker running her first ever Marathon for National autistic society. A charity close to our hearts and helped Connie and me through some tough times. Beyond proud of you! You go and smash it.
Love Mum, Rod, Ella, Sam, Jack, Ted and Lenny xxxx
Wishing Maddie Green all the best for her first marathon, running on her 22nd birthday for Leukemia Care in memory of her uncle who was sadly lost before she was born. Have a great run!
Lots of love from mum and dad xx
Mike Peter
BBC Sport journalist, running the Marathon
Image source, Mike PeterThere's a test for runners before they even get started as they face the hill leading up to the starting pens.
We're feeling the first warmth of the sun today, it's beginning to balance out a bitter wind - I was shivering uncontrollably amid the tall buildings at Canary Wharf while changing trains.
Hopefully conditions improve further - some of us are wearing vest tops!
Image source, Getty ImagesAnother subplot today is qualification for this summer's Olympics.
Charlotte Purdue, Calli Hauger-Thackery and Phil Sesemann have already secured their places for Team GB and there is space for two more men and one woman.
Emile Cairess was sixth on his London Marathon debut last year, producing the best finish among the home athletes and also recording a third-fastest British men's time.
The men's qualification standard is time two hours eight minutes and 8.04 seconds. The women's time is 2:26:50.
Last year Cairess ran a 2:08:07 so that time is well within reach.
He trains with Sesemann and is hoping to join him on the train to Paris.
Cairess is joined in the men's race by fellow Briton Callum Hawkins, who finished fourth at the World Championships.
Compatriot Marc Scott, a 3,000m bronze medallist at the 2022 World Indoor Championships - will make his marathon debut, as will Mahamed Mahamed.