Rob Hayles
Former GB cyclist on BBC Radio 5 live sports extra

Image source, Reuters

If you do finish with more than five riders, the chances are that your team has not gone as fast as it can. The bigger riders should do all the heavy work on the flat so the lighter guys can hit the bottom of the final climb as fresh as possible.

Just 20 minutes until Team Sky are on the course. They are all furiously pedalling on the rollers, warming those legs up.

Astana are down to just six riders as they hit the bottom of the climb top the finish - the Cote de Cadoudal. It is 1.7km long with an average gradient of 6.2%.

Matt Slater
BBC Sport at the Tour de France

French papers full of Alexis Vuillermoz's win yesterday and he seems like a lovely chap. A former mountain-bike star who came late to road cycling, the 27-year-old is now not so quietly having a very good year.

He was sixth at Fleche Wallonne and then third up the Mur de Huy on Monday. So he likes short, punchy climbs.

I am not expecting huge amounts from him in the team time trial though.

AG2R - La Mondiale might win the battle of the French squads over the 28km course but that is not saying much. A bit like Arsene Wenger and spending money on proven players, the French teams seem to think time trialling well is tantamount to cheating.

Image source, Getty Images

Astana are continuing to push on and they are through the 20.5km time check in 22 minutes, 12 seconds - that's four seconds quicker than the previous best time set by IAM Cycling.

Polkadot Jersey
Classification

Image source, Getty Images

King of the Mountains leader Daniel Teklehaimanot has just finished with his MTN-Qhubeka team-mates to complete a stunning first week for the African-based team.

Teklehaimanot is the first black African rider to wear one of the big Tour classification jerseys and he will take it into the Pyrenees on Bastille Day, which is an incredible honour for the Eritrean.

He was fifth over the line and their time of 34 minutes, 11 seconds is good enough for eighth at this stage.

Image source, Getty Images

Movistar are the next on the ramp. Alejandro Valverde won stage one of the 2008 Tour de France, which had this same finish in Plumelec, to take the yellow jersey.

The Spaniard is too far down in the standings (one minute, 47 seconds adrift of Chris Froome) to challenge and his team will be more focused on getting Nairo Quintana, who is nine seconds further back, up the standings.

They have Britain's Alex Dowsett in their team - the man who held the hour world record before Sir Bradley Wiggins surpassed it. Dowsett, who is also national time trial champion, injured his elbow earlier in the Tour though and may be a little uncomfortable on the bars today.

As an aside, Froome and Vincenzo Nibali were making their Tour debuts in 2008.

Simon Brotherton
Cycling commentator on BBC Radio 5 live sports extra

Vannes hosted the start of an individual time trial in 1947, the first post-war Tour de France. It was 139km to Saint Brieuc and remains the longest individual time trial in the history of the race.

Image source, Getty Images

Astana have lost a couple of riders already. "That's not great news for Vincenzo Nibali," says Rob Hayles on commentary.

They have just gone through the 10km time check quickest, one second ahead of the IAM Cycling team, who are in turn just setting the fastest time at the finish.

They cross in 32 minutes, 53 seconds to take the clubhouse lead by 10 seconds.

Image source, Getty Images

Lotto-Soudal are over fourth quickest, 48 seconds slower than Lampre-Merida.

That ends Frenchman Tony Gallopin's hopes of wearing the yellow jersey on Bastille Day when the race resumes on Tuesday after Monday's rest day.

Mike Whittaker: What would happen if at the start of the day a team only had 3 or 4 riders (with 5th rider to score)?

Matt Taggart replies: Those remaining in the race are required to complete the course within the permitted finishing time (which is 30% of winning time). So I "think" OGE are safe unless someone beats 26min 3sec... Surely that can't happen on a hilly TT stage? #bbccycling, external

BBC Sport's Gemma Sterba has been out with her camera again today and this little lot somehow caught her attention, having a quiet afternoon in Brittany.

My colleagues Simon and Rob are now live on 5 live sports extra, or this very website if you prefer.

Here goes the Astana team of defending champion Vincenzo Nibali. The Italian has been losing time hand over fist in the opening week and is already one minute, 48 seconds adrift of Chris Froome.

Can Nibali claw back any time today? We'll know in about half an hour.

Rob Hayles
Former GB cyclist on BBC Radio 5 live sports extra

Radio commentary with Simon Brotherton and Rob Hayles starting up in five minutes.

Here's what Rob had to say in last night's podcast...

"On a scale of one to 10, this team time trial is an eight or nine in terms of importance for the general classification riders.

"It's an opportunity for some riders to take 20-30 seconds out of each other. That's quite a big margin and some riders can't afford to lose that.

"Team Sky are all or nothing but the way the guys are riding they are incredibly strong and they've got most to gain. BMC also have a lot to gain with Tejay van Garderen, who is third overall. They could be on the top step of the podium.

"It's all about timing and not leaving too much out on the road too early because if you've given everything, you could lose an awful lot of time on the final 1.5km climb."

Listen to more on the podcast.

Image source, Getty Images

Lampre-Merida are the quickest of the four teams to finish the course so far in a time of 33 minutes, 03 seconds.

Exactly half of the 22 teams have departed Vannes.

Britain's Simon Yates has just been giving his thoughts on his Orica GreenEdge team's ride. "We didn't go full gas. There was no point in dropping Michael Matthews and then him missing the time cut. It's a fast course though.

Speaking of the opening week...(seamless eh? we don't just throw this live text together) ain't technology a wonderful thing? It enables us to get a cyclists' eye view of racing in the Tour de France. Enjoy...

Le Tour de France:, external Revivez les meilleurs moments de cette 1ère semaine / Take a look back at the 1st week of the #TDF2015

We are one hour from seeing the Team Sky boys head down the ramp.

BBC Sport spoke to Geraint Thomas a little earlier: "If we did lose the yellow jersey today it wouldn't be the end of the world.

"The first day after Monday's rest day is Bastille day, and there is a big chance a breakaway could win the stage as there's only the one big climb at the end. To control the race on a day like that takes quite a lot of effort.

"But certainly in terms of the morale we'd like to keep it. We're off at 15:45 and we'll start warming up at 15:00 local time. Before that we'll be having a team meeting but basically we'll just be resting up, relaxing, that's about it."

You will be able to read Geraint's thoughts on the opening week in his latest blog which will be on the BBC Sport website on Monday's rest day.

Image source, David Reeves

David Reeves: Great view in Vannes as the teams go by, ready to cheer on @chrisfroome and @TeamSky #LeTour2015 #bbccycling , external

Image source, Getty Images

Tony Gallopin's Lotto-Soudal team have just headed off down the ramp. They are not renowned as a great time trial team. He is 26 seconds adrift of Froome.

Orica GreenEdge are edging towards the finish. There are thousands upon thousands of fans out on the roadside, waving their distinctive black and white Breton flags.

Over the line they go and stop the clock at 37 minutes, 13 seconds. Don't expect that time to last though.

Image source, Getty Images

The Orica GreenEdge riders are all sticking together round this 28km course. Michael Matthews is sitting at the back and being nursed round by his team-mates.

With three teams through the first time check, at 10km, Orica are the slowest, one minute, 45 seconds off the pace of Lampre.