Brendan Foster
Olympic medallist and BBC athletics commentator on BBC One

Six laps to go and they are running at around 13 minute pace. I wonder what the leaders' tactics are when they get into the late stages? You don't want to keep leading like this. 

The field hasn't been split by this pace though, Andrew Butchart is still up there in the mix as Mo Farah moves up to take the lead. He looks good. 

Image source, Getty Images

Sam Holloway: This looks quick, can Mo hang on? Come on, Mo!  

What a superb performance from Caster Semenya who just destroys the field, clocking a time of 1:55.28, a PB and a South African record.

Burundi's Francine Niyonsaba comes in silver, but over a second after Semenya. Kenya's Margaret Wambui takes bronze.

A 63.9 second lap, followed by 65. This is on for sub-13 minute pace. Only four men have broken that barrier this season. 

Julia Hilbourne: I get very nervous watching @Mo_Farah, external at these olympics. Please stay upright.   

Dejen Gebremeskel and team-mate Muktar Edris are on the front, working the field like a Tour de France peloton. Paul Chelimo also taking a turn on the front.

Mo Farah is in the middle, looking safe, but with seven laps to go the pace is relentless.

Brendan Foster
Olympic medallist and BBC athletics commentator on BBC One

This is quite clever. The Ethiopian team has decided they cannot beat Mo in a slow race so let's make it faster.

Allison Curbishley
BBC athletics expert on Radio 5 live

I think there's an Ethiopian plan here. That first lap was quick, well inside 13-minute pace, because they want to make it hard from the start, which is why Mo Farah realised he couldn't hang around at the back.

Jess Davies: Home from a night out just in time for #MoFarah, external. Ideal  

It's quick. The opening kilometre is fast. The pack are taking Mo Farah and his phenomenal finishing on. Can they break him? 

Image source, Getty Images

Mike Costello
Radio 5 live athletics correspondent

It is time to dance under the lights again. 

Brendan Foster
Olympic medallist and BBC athletics commentator on BBC One

I am more nervous tonight about Mo running than I have been in any race since 2011. That is partly because he has fallen and was tripped before here.

Mo is looking good at the moment, looking strong and running his race sensibly.

Andrew Butchart is the third member of Team GB from Dunblane, after the Murray brothers of tennis. He looks good in these very early stages. 

Kevin Johnson: Last heave. Cheese, biscuits & apple to see me through #motime, external Come on @Mo_Farah, external - double double & equal 2012 medal tally   

A spot of shadow boxing on the line from Mo Farah. He is up for this.

They are away!

A reminder if you need it, Farah won the 5,000m and 10,000m double in London. He won the 10,000m here last week. This for the set.  

Steve Cram
BBC athletics commentator on BBC TV

It is not about Mo putting his name in the history books tonight, it is about turning another page and writing another story.

I'm not sure I have seen Mo this animated in the build up to the race. He was geeing the crowd up.

Around 13 minutes separates Mo Farah from even more greatness. Potentially.

This could be his last Olympic race. Enjoy, endure, REMEMBER.

Paula Radcliffe
Women's marathon world record holder on BBC TV

I think the race in London earlier this year was important for Mo because he pretty much ran it on his own. He ran it hard. If there is any criticism of Mo it is that he doesn't go for the fast times but I think he worked hard at the Anniversary Games and that will give him confidence.

Jennifer Pennells: Waiting for @Mo_Farah, external to see if he can do the double double. It's a tough task but if anyone can do it, Mo can  

Ben Poole: So sleepy, hurry up Mo!