Ethiopia's Shura Kitata wins men's title after thrilling sprint finish
World record holder Eliud Kipchoge finishes shock eighth
World record holder Brigid Kosgei of Kenya retains women's title
David Weir misses out on men's wheelchair title as Canada's Brent Lakatos wins
Nikita den Boer of the Netherlands wins women's wheelchair race
Races took place in bio-secure closed course over 19 laps of a 1.5 mile circuit
45,000 runners took part in virtual London Marathon across the world
Kosgei is going to win this so you have to look further back for the fun.
Sara Hall is chasing down Ruth Chepngetich for second place.
And further back still the race for the British title is on. Natasha Cockram has caught up with Naomi Mitchell and the pair are running shoulder to shoulder.
Kenyan Brigid Kosgei has just taken the bell. Feels weird to say that at the London marathon but things are pretty weird nowadays.
The world record holder is completing the last of her 19.6 laps. She's smiling and looking very strong.
American Sara Hall has just overtaken Ethiopian Ashete Bekere to take third place.
She edges in front, then kicks away. Kenyan Ruth Chepngetich has still got a decent lead in second, though.
Britain's Naomi Mitchell is on course for a personal best and is currently leading the race for the British title.
But hot on her heels and closing in is Natasha Cockram. Compatriots Lily Partridge and Steph Twell have dropped out.
Hannah England
Former world 1500m silver medallist on BBC TV
It will be hard for these athletes. There are a lot of runners out on the course, all running at different paces and lapping each other.
It's hard to keep track.
If you're just joining us, here's a quick rundown of some of the many differences in this year's marathon.
The runners are completing 19.6 laps of a course with the finish line in the usual place on The Mall.
The route also takes in Horse Guards Parade, Birdcage Walk and the spur road running adjacent to the front of Buckingham Palace.
There are two laps to go for the leaders.
Ruth Chepngetich is actually in danger of being caught by Ethiopian Ashete Bekere, with America's Sara Hall working hard to catch up too.
The American is on course to beat her personal best of 2:22.16.
World record holder and defending champion in London Brigid Kosgei will have two laps to go next time she crosses the line.
She is almost a minute ahead of world champion Ruth Chepngetich and looks comfortable.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
In sadder news for the British contingent: Lily Partridge has dropped out.
Steph Twell stopped earlier and now Partridge becomes the second Briton to do so. The 29-year-old was going for an Olympic qualifying time but that will have to wait.
Image source, ReutersBritain's Naomi Mitchell is running a seriously impressive race.
She finished in 2:48 last year and is on track for two and a half hours now. Lockdown training has clearly suited her.
Image source, Getty Images
Andrew Cotter
BBC Sport commentator
It's intriguing how a marathon develops. Chepngetich was feeling strong and clearly now is not quite there at Kosgei's pace.
Up front, Brigid Kosgei is way ahead.
She and fellow Kenyan Ruth Chepngetich ran together for the first 18 miles but the world record holder has left her compatriot far behind and will surely win now.
Hannah England
Former world 1500m silver medallist on BBC TV
Naomi Mitchell looks like she's got it really right today. She could be after a really good time.
The British title is added motivation today.
Anyone else running in exotic locations?
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Naomi Mitchell's personal best is 2:37.51 and she looks set to smash that now. What an effort!
Hannah England
Former world 1500m silver medallist on BBC TV
It really looks like Mitchell is putting her foot down.
Hopefully these ladies can work together and keep each other company.
Natasha Cockram was the leading Briton on the course but she's just been overtaken by Naomi Mitchell.
Both are inside the Olympic qualifying time.
Movement at the front!
Brigid Kosgei is making moves with five laps to go, leaving Ruth Chepngetich far behind her.
Daniel Davies: Good luck to the Bowen family Andrew and Luke who are running in Llanelli. And Curtis Bowen who is serving in the Royal Navy in the Falklands. All running their first marathon. In aid of #saffa, external#mentalhealth, external