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It's the 37th annual London Marathon.

Always one of the biggest events in the sporting calendar, and this year is no different with close to 40,000 people pounding the streets of the city centre.

The race begins in Greenwich Park, with elite runners and charity fundraisers heading through Woolwich and round past the Cutty Sark.

Runners then go around Rotherhithe, over Tower Bridge towards Canary Wharf, where th athletes then double back and head west along the Thames, along Embankment, past the Houses of Parliament, then Buckingham Palace before the finish line on The Mall.

Security has been ramped up ahead of this year's event in light of the recent Westminster terror attack.

We've got a roving reporter on the ground, ready to catch up with some of the fun runners and the fans, while also chatting to some of the elite runners at the finish line.

For all the action, check out our live blog below.

That's that

Well it’s been a great day. What an occasion. Thanks for joining us on our live coverage. See you next year...

Last legs

The end of the day

Here’s reporter Tom Moore summing up an incredible day’s action.

Chappers

Here’s Match of the Day 2 host Mark Chapman.

Call the Midwife

Not for a birth, but one of the stars of the hit BBC show was running the marathon today.

Royal hug

Celeb chat

There were a number of celebrities running today. Here’s one chatting to our own Tom Moore...

And another

So many like this

Not many to go...

35,000 runners have now crossed the line, with around 4,000 still to go.

Well said

Congrats to all

James Cracknell for MP?

James Cracknell was pleased with his run today...

Funny, but not funny...

Love this

The Royals

Stars

Top man

Here’s our story with man of the moment Josh Griffiths.

Man of the moment

Here’s Josh Griffiths.

Mary Keitany speaks

Here’s the women’s race winner...

Agreed

Josh Griffiths

There’s lots of interest in Josh Griffiths, as you might expect, our man Tom Moore is waiting patiently to have a chat with him.

Fancy dress

There are always lots of people running in fancy dress. Here’s the best of them. Joe Spraggins was the first in fancy dress to cross the line today.

Josh Griffiths

Griffiths: “Thought with the Commonwealth Games I’d give the marathon a shot. I never considered the World Champs until I crossed the line.”

Josh Griffiths is on BBC now: “My first marathon today, I never even considered a British place, it was always to qualify for Commonwealth Games for Wales.”

Swansea Harriers

Help

It’s all about Swansea Harriers today as another Swansea Harrier has stopped to help a Chorlton Runner, clearly struggling by the finish, to get over the line. Unbelievable spirit.

More congratulations

Where's Josh?

We are trying to track down Josh Griffiths. As a club runner he doesn’t have to come through the mixed zone, where our man on the ground is...

Well done