13:00 - You can catch-up the report here as the London Marathon continues with the charity runners. This is the end of the live blog - thanks for reading!
12:40 - Mo Farah has confirmed his final race of his career will be the Great North Run in September.
After finishing the London Marathon, the 40-year-old told the BBC: "I gave it my all but my body just wasn't responding and that's when you know when it's time to call it a day.
"Part of me was wanting to cry. The people were amazing, even in the rain to line the streets and that's what this is all about. It's what has kept me going for so long throughout my career.
"I will miss that feeling, I am emotional today."
12:30 - Kelvin Kiptum's record-breaking London Marathon time was 2.01:25, beating Eliud Kipchoge's 2:02:37 - however Kipchoge's world record still stands at 2:01:09. Will Kiptum break it one day?
In the wheelchair races, Marcel Hug broke his course record by clocking 1.23:44 just six days after winning in Boston, with 2018 champion Madison De Rozario reining supreme in the women's event by sprinting ahead of four-time champion Manuela Schar down The Mall.
12:20 - London Marathon winning debutant Sifan Hassan has been speaking to the BBC and looks in total shock at her remarkable run.
"It was just amazing. I never thought I would finish a marathon and here I am winning it! I’m so grateful to the crowd – I’ll never forget this race.
"I had a problem with my hip, which made me stop. But it started to feel a little bit better.
"And then I missed one of the drinks stations! I didn't practice that part of the race because I have been fasting and so that was quite difficult. But I needed it!
"At 20km I knew that I could kick on because I didn't feel that tired and I didn't care how I finished, I just wanted to get there.
"I wasn't thinking about winning or how fast I was going to be and I think that was a good thing for me today."
2023 London Marathon results: Top 10
Men's race result:
1. Kelvin Kiptum (KEN) - 2.01:25 (CR)
2. Geoffrey Kamworor (KEN) - 2.04:23
3. Tamirat Tola (ETH) - 2.04.59
4. Leul Gebresilase (ETH) - 2.05:45
5. Seifu Tura (ETH) - 2.06:38
6. Emile Cairess (GBR) - 2.08:07
7. Brett Robinson (AUS) - 2.10:19
8. Phil Sesemann (GBR) - 2.10:23
9. Mo Farah (GBR) - 2.10:28
10. Chris Thompson (GBR) - 2.11:50
Women's race result:
1. Sifan Hassan (NED) - 2.18:33
2. Alemu Megertu (ETH) - 2.18:37
3. Peres Jepchirchir (KEN) - 2.18:38
4. Sheila Chepkirui (KEN) - 2.18:51
5. Yalemzerf Yehualaw (ETH) - 2.18:53
6. Judith Jeptum Korir (KEN) - 2.20:41
7. Almaz Ayana (ETH) - 2.20:44
8. Tadu Teshome (ETH) - 2.21:31
9. Sofiia Yaremchuk (ITA) - 2.24:02
10. Susanna Sullivan (USA) - 2.24:27
Men's wheelchair race result:
1. Marcel Hug (SUI) - 1.23:44 (CR)
2. Jetze Plat (NED) - 1.28:44
3. Tomoki Suzuki (JAP) - 1.30:00
4. Daniel Romanchuk (USA) - 1.30:18
5. David Weir (GBR) - 1.32:45
6. Sho Watanabe (JAP) - 1.35:03
7. Jake Lappin (AUS) - 1.35:15
8. Michael McCabe (GBR) - 1.35:15
9. Evan Correll (USA) - 1.35:15
10. Ernst Van Dyk (RSA) - 1.35:18
Women's wheelchair race result:
1. Madison De Rozario (AUS) - 1.38:51
2. Manuela Schar (SUI) - 1.38:52
3. Catherine Debrunner (SUI) - 1.38:57
4. Susannah Scaroni (USA) - 1.38:57
5. Wakako Tsuchida (JAP) - 1.47:41
6. Aline Rocha (BRA) - 1.47:40
7. Eden Rainbow Cooper (GBR) - 1.47:43
8. Jenna Fesemyer (USA) - 1.47:43
9. Tsubasa Kina (JAP) - 1.47:48
10. Merle Menje (GER) - 1.51:31
12:12 - Mo Farah finishes his final marathon
Britain's four-time Olympic gold medalist and six-time world champion crosses the line to complete his final marathon after being beaten in the final stretch by Phil Sesemann. Farah looks exhausted.
The duo finish behind Emile Cairess who becomes the first British male to finish this year. The 25-year-old was taking part in his first marathon and crosses the line sixth. What an achievement.
12:07 - Geoffrey Kamworor of Kenya finishes second with the world champion, Tamirat Tola of Ethiopia, crossing the line third.
12:02 - Kelvin Kiptum wins the men's race!
The 23-year-old Kenyan has clocked the second-ever fastest marathon time, breaking the course record in the process - in only his second race at this distance! He was seconds away from a world record, but faded at the last.
We await official confirmation of the time.
12:00 - There is about two minutes to go as we approach Buckingham Palace and the course record is set to be broken by Kelvin Kiptum - will it be a world record too?
11:57 - Kelvin Kiptum has surged ahead in the men's race and now leads ahead of Amos Kipruto and Tamirat Tola.
A world record is on the cards! The time to beat is 2.01:09 set by Eliud Kipchoge in 2019.
All eyes on Kiptum and the clock.
11:53 - Samantha Harrison has crossed over the line - knocking almost six minutes of her personal best - to be the first British female to finish this year.
11:45 - Sifan Hassan wins the women's race!
Incredible!
Running in her first marathon, Hassan - who trained through Ramadan, looked like she was about to drop out with injury before storming back to be among the leading pack in the greatest women's field ever assembled - crosses the line ahead of Ethiopia's Alemu Megertu and Kenya's reigning Olympic champion Peres Jepchirchir, who took third.
She looks stunned, but shouldn't be. What a race!
11:44 - It's now a race for three but Sifan Hassan breaks clear in the final stretch as we approach The Mall!
11:40 - Who is going to make the break in the women's? It's neck-and-neck between Yalemzerf Yehualaw, Peres Jepchirchir, Sheila Chepkirui, Alemu Megertu and Sifan Hassan.
11:37 - There is just over a mile to go in the women's race and the pace has slowed. We're now outside the world record time as the rain continues to fall.
Peres Jepchirchir is primed for a sprint finish and, remarkably, Sifan Hassan is in the mix too.
11:35 - Away from the leading pack, Emile Cairess has surged ahead of Mo Farah and could be the best British finisher in the men's race at this rate.
11:30 - Kelvin Kiptum still leads the men's race but failed to grab his bottle in the drinks station and goes without. Could that be significant? He keeps turning around to check his narrow lead - is he wasting energy doing so?
11:26 - Remarkable! Sifan Hassan, the double Olympic champion who looked down-and-out in the women's race is now back among the leading pack. Just a reminder, this is her first marathon. What a run.
There is just over 10 minutes to go.
11:20 - The course record is still possible in the women's race and the time to beat is 2.17:01 set by Kenya’s Mary Keitany in 2017.
We have about 16 minutes to go.
11:10 - In the men's race, Kelvin Kiptum leads with Amos Kipruto and Birhanu Legese among the leading pack. They're being chased by Kenenisa Bekele, but Mo Farah isn't that far behind with Emile Cairess challenging.
11:02 - It's pouring with rain in London but that doesn't stop the thousands of spectators - huddled under umbrellas with many wearing ponchos - from cheering on.
It looks very slippy for the runners.
10:58 - The women's race is hotting up - big time.
Peres Jepchirchir is leading the pace with Alemu Megertu, Genzebe Dibaba and Yalemzerf Yehualaw chasing. Sifan Hassan, who was tipped to withdraw earlier, is closing the gap on the front runners.
The 5k from 20-25k was the fastest recorded at this stage of the London Marathon, clocking 15 minutes 54 seconds.
10:55 - Madison de Rozario wins the women’s wheelchair race!
The 29-year-old Australian, who finished second in Boston, crosses the line ahead of Switzerland's Manuela Schar to win her second London Marathon after 2018.
10:49 - Britain's David Weir finishes fifth in the men's wheelchair race - it was his 24th London Marathon. Remarkable.
10:47 - Jetze Plat finishes second in the men's wheelchair race as attention turns to the women's race where there's a four-way tussle for top spot as they reach Victoria Embankment.
10:39 - Marcel Hug win's the men's wheelchair race!
Hug, who has dominated this year, raises his hand aloft and crosses the line to win his fifth London Marathon - his third in a row. Wow.
The Swiss star has now won 12 of his last 14 marathons. Incredible.
10:37 - We’re not far away from the finish in the men’s wheelchair race with Marcel Hug approaching The Mall. The 37-year-old has been leading from the start and it will be an almighty shock if anything was to happen now.
10:33 - The men’s race has reached Cutty Sark in Greenwich. The crowd are cheering and clapping as the leading pack go past.
Here is a picture of the women's race going past the same stage moments earlier:
10:27 - Sifan Hassan is holding her hip and is stopping occasionally to stretch. The 5,000m and 10,000m Olympic champion, who is using London as a trial to see whether she will compete in the marathon at the Paris 2024 Olympic Games, is at the back of the leading pack.
Steve Cram, commentating on BBC Sport, is urging her to stop. "These are worrying signs", he said.
10:14 - In the women's race, Yalemzerf Yehualaw, Sifan Hasaan and Peres Jepchirchir go through 10k in 32.37; it's not a world record pace, but not far off...
10:12 - We’re over halfway in the men’s wheelchair race and Marcel Hug has a remarkable two-minute lead. He'll be difficult to beat in this form. In the women’s, Manuela Schar is leading ahead of defending champion Catherine Debrunner.
Debrunner holds the London course record with a time of 1.38:24, which she set last year.
10:09 - The women’s elite race has all the main challenges out in front as expected, aside from Brigid Kosgei who pulled out within the first few minutes.
10:00 - Away we go!
Eliud Kipchoge - who ran in Boston a week ago - pushes the buzzer to get the men’s race and mass start underway and it will be an emotional race for Britain’s Mo Farah who competes in his last ever marathon.
It’s unlikely Farah will challenge the front as the race features four of the five fastest marathon runners of all-time.
But there's no doubt the 40-year-old - and 47,000 runners behind him - will be cheered on throughout.
09:45 - It’s starting to rain in London and this could be a problem for the wheelchair racers with water washing up grit on the road causing punctures.
09:36 - Switzerland’s Marcel Hug currently leads the wheelchair race. He holds the course record in London with a time of 1.24:38 and is leading from the front once again.
09:29 - The world record holder is out!
In the women's race, Brigid Kosgei looked in trouble.
The 29-year-old was seen limping just a few minutes into the race and walked to the side of the road before pulling out completely. That is a shock.
09:25 - They're off!
The women's race is underway and there could be a new world record coming our way.
Featuring the current world record holder, the reigning Olympic champion, Olympic 5,000m and 10,000m Olympic champion, the 15,000m world record holder and last-year's winner, this year's race has been dubbed 'the greatest field ever assembled'.
Their time to beat for a record? 2.17:01 set by Kenya’s Mary Keitany in 2017. Paula Radcliffe’s mixed record (with a male pace-setter) of 2.15:25 set 20 years ago could also be at risk.
09:15 - They're off!
The men’s and women’s wheelchair races get underway with David Weir getting an especially large cheer.
08:45 - Who are the ones to watch?
In the women's race, world record holder Brigid Kosgei will face stiff competition from last year’s winner Yalemzerf Yehualaw, Olympic champion Peres Jepchirchir and current 5,000m and 10,000m champion Sifan Hassan.
Britain’s Eilish McColgan was set to make her debut but was forced to pull out through injury.
Over in the men's, 2022 winner Amos Kipruto is expected to be challenged by Ethiopia’s world champion Tamara Tola and Kenenisa Bekele - the second-fastest marathon runner of all-time - as well as Kelvin Kiptum, Birhanu Legese and Mosinet Geremew.
The wheelchair race will feature eight-time winner David Weir - competing in his 24th consecutive London Marathon - and 21-year-old Eden Rainbow-Cooper.
08:40 - What time do the races start?
The elite wheelchair races start at 9.15am with the elite women’s race at 9.25am. The elite men’s race and mass start - featuring 47,000 runners and a possible 73 world records - gets underway at 10am.
Good luck to all those who managed to get a place and are running for good causes.
08:30 - Finally the London Marathon is back in its usual April spot as for the past three years we’ve seen the signature race run in October because of the pandemic.
It's going to be an especially emotional race for Mo Farah who will compete in his final marathon.
Farah, a four-time Olympic gold medalist and six-time world champion, will hopefully compete in the Big Half or the Great North Run in September, but has ruled out competing against the world's very best in future.
He told reporters on Thursday: "It won't be my last race but London will be my last marathon. It will be quite emotional. Maybe after the race there will be tears."
