The group of six - consisting of Pawels, Sicard, Gautier, Huzarski, Vachon and Majka - are bridging the prloton and the front three breakaway riders nicely. they're 2mins 23secs down on the leaders.

The peloton though is a worrying 13mins 37secs behind.

Yesterday's stage winner Marcel Kittel offered up a bit of mathematics to work out whether the breakaway would stay out in front today.

I'm assuming X is number of wheels on the bike, with the p the amount of porridge eaten in the morning.

It's looking rosier and rosier for the breakaway.

The peloton has drifted 13 minutes away. That's pretty huge. Do they have it under control or is this slipping away?

Maybe there's no perceived GC threats in there and the peloton is happy to let them have the stage.

Greg van Avermaet, one of the three men out front, is the virtual yellow jersey leader.

Image source, Getty Images

With today being the first day of climbing on the Tour, I want you to share the first time you rode a bike up something steep.

Whether it was a mountain or the hill to the chippy, use #bbccycling and feel free to include a photo.

Image source, Getty Images

The next two climbs are category threes.

Then we'll turn it up a notch with a brace of second category schleps.

Pas de Peyrol - 5.4km at about 8%.

Col du Perthus - 4.4km also at about 8%.

Pas de Peyrol will be making its 10th appearance on Le Tour.

If you're looking at #bbccycling and wondering why people are naming multi-lingual songs - it all started with macarons...

Richard Cassidy: Who could forget Bill Wyman's 'Je suis un rock star' - proper 

Tony Hunt: Fade to Grey by Visage multilingual!

The peloton is 11mins 30secs adrift of the three in the front breakaway.

Breakaway - Van Avermaet, Grivko, De Gendt.

Splinter group +1min 45secs - Pawels, Sicard, Gautier, Huzarski, Vachon, Majka.

Peloton+11mins 30secs

Rob Hatch
BBC Radio 5 live commentator

An attacking rider who gets up climbs well enough but who has a strong finish on medium difficulty climbs.

This has basically been me all morning.

"Oh yeah, it's one for the puncheurs. No, I won't explain exactly what I mean."

Jill has helped me out with songs that feature more than one language.

It's not bi-lingual, but I do know all the words to La Bamba...

Jill Hyde: Beatles 'Michelle', ELO 'Hold on Tight', David Gates 'Took the Last Train'. All multi-lingual

Left jab, right hook, uppercuts, haymakers. If you've got the punches, you have a chance to win.

If you can pounce out of the peloton on a steep climb, today might be your day.

Float like a butterfly, sting like a bee...

Rob Hatch
BBC Radio 5 live commentator

I don't think this breakaway is enough. In the break there are a few riders who could well be policing things for other riders later today. For example, Romain Bardet comes from this region - he has Cyril Gautier up the road and could plan something.

Boom. The peloton have slowed down for a quick bite to eat and the front three have increased the gap to nine minutes.

The group of six in the middle are a minute shy of the breakaway.

Here's how the general classification looked after yesterday's stage four.

Image source, Tour de France

Rob Hayles
Former GB cyclist

With the combination of riders we have got in the two breakaway groups, we have four teams with potential GC riders presented - Astana, Tinkoff, BMC and AG2R La Mondiale, which takes a lot of pressure off of them and adds a little bit on to the other teams like Sky, Movistar and FDJ. 

Oh, so like Feliz Navidad or Madonna's La Isla Bonita... "Last night I dreamt of San Pedro..."

I think those are all the multi-lingual songs I know.

The only man in that breakaway who is level in the GC with Chris Froome is Greg van Avermaet.

He sits on +18secs with the Team Sky man and currently leads the virtual yellow jersey rankings.

That group of nine that had broken away is not getting along.

It's now a group of three - Van Avermaet, Grivko and De Gendt - after disagreements about rotating who should go on front.

They've dropped the other six, including Rafal Majka, and they are stranded between the leaders and the peloton, which is six minutes behind.

Rob Hayles
Former GB cyclist on the BeSpoke podcast

Marcel Kittel has had a lot of pressure on his shoulders. The team had done everything right for him to up to now and he hasn't delivered. We had written him off, but now he's back on top.

Image source, Getty Images/AP

Kev Atkinson: I don't think there is any threat to Froome this year, if he can avoid trouble he will win

Jules Hammond: I think Quintana is Froome's biggest threat, I can't wait for them to go against each other in the climbs!

Matt Taggart: Movistar are just going to track Sky, then the silent assassin Quintana will strike when he senses weakness in Froomey