Three go clearpublished at 15:13 British Summer Time 19 July 2017
Primoz Roglic goes off the front of the breakaway, Alberto Contador responds. As does Serge Pauwels.
There are six behind in pursuit.
Summary
Primoz Roglic wins stage 17
Froome extends lead to 27 seconds
Uran and Bardet now second and third
Marcel Kittel abandons - he had been in green jersey
Three go clearpublished at 15:13 British Summer Time 19 July 2017
get involved Get Involved - any answers?published at 15:12 British Summer Time 19 July 2017
#bbccycling
This is an excellent question that I do not have the time to research right now......
Jono Dicks: Is this year's TDF suffering the most abandonments @BBCSport, external? If not, then which year has seen the most riders abandon the race?
43km to gopublished at 15:10 British Summer Time 19 July 2017
The fans look like they are having a very enjoyable day out, waving as the race passes them by.
But it has been a tough day for the riders so far, with Marcel Kittel, Dan McLay and Thibaut Pinot all abandoning.
"The sickness and injury is starting to take its toll," said Rob Hayles on commentary.
Image source, AFP45km to gopublished at 15:06 British Summer Time 19 July 2017
The yellow jersey group is now making its way over the summit of the Telegraphe.
There is a little downhill and then it is all the way up to the top of the Galibier.
"What a climb," is the succinct Rob Hayles take on it.
"The most iconic climbs the riders tackle on the Tour de France"published at 15:04 British Summer Time 19 July 2017
Rob Hayles
Former GB cyclist at the Tour de France"The big Col du Galibier comes after 140kms of racing. It's the fourth climb of the day and starts only 5km after topping out at the Telegraphe. Although the gradient starts relatively steady, 12km into the 18km climb the gradient really starts to kick up above 9% and from there to the top it's a real grind and will certainly sort the men from the boys."
Where does it rank in terms of the iconic climbs that are tackled on the Tour de France?
"This one, Tourmalet, Alpe d'Huez and Ventoux for me are the most iconic climbs the riders tackle on the Tour de France. The Galibier ranks right up there in terms of commanding respect from anyone and everyone."
Over the Telegraphepublished at 15:04 British Summer Time 19 July 2017
Primoz Roglic is the first over the Telepgraphe, from Bauke Mollema and Serge Pauwels.
The breakaway group is down to 10.
Postpublished at 14:58 British Summer Time 19 July 2017
Just reading that when Dan McLay quit he was 8km behind the group of stragglers.
Sometimes you've just got to know when to call it a day.
Postpublished at 14:56 British Summer Time 19 July 2017
Looking quite thick overhead but no rain so far (at least not as far as I can tell).
Bauke Mollema and Jarlinson Pantano are pulling the increasingly thin lead group up to the top of the Telegraphe - 1.5km to go until they reach the top.
The Froome group - also called the peloton - are four minutes behind.
Dan McLay abandonspublished at 14:53 British Summer Time 19 July 2017
"That's another sprinter gone," remarks Rob Hayles.
The Brit - who was in the thick of some of the spring finishes earlier in the Tour - had been struggling on the climbs for a while.
Another rider crossed off my list.
How's Froome looking today?published at 14:52 British Summer Time 19 July 2017
Rob Hayles
Former GB cyclist at the Tour de FranceVery difficult to read as he looks bad even when he's flying. I'd rather look bad, though, if it helps you to be the fastest on a lap round France.
'What a job he's done'published at 14:49 British Summer Time 19 July 2017
Simon Brotherton
Radio 5 live at the Tour de FranceMichal Kwiatkowski has done an incredible job so far this Tour in riding for Froome, a former world champion who has completely sacrificed himself.
Image source, Getty ImagesImage caption, Froome's super domestique
55km to gopublished at 14:48 British Summer Time 19 July 2017
The lead group is thinning out on the slopes of the Telegraphe, riders sliding down the mountain. The likes of Roche, Molard and Voeckler.
The pace and the gradient is burning them. There are just 12 now in the lead group, almost four minutes clear of the Sky-controlled peloton.
get involved Get Involvedpublished at 14:46 British Summer Time 19 July 2017
#bbcycling
First time (done the Marmotte since ) Family holiday, drove to the gardens at Lauteret, left family and ride to top of Galib, I had 1 gel and a bidon with me, thought I'd do a bit over the otherside. Got over excited and when I turned to come back was at the bottom of the telegraph. Was rescued on the descent after eventually clawing my way back over the Galib. Love that mountain.
Wedge
Postpublished at 14:44 British Summer Time 19 July 2017
BBC Radio 5 live sports extra"It may put one or two off from attacking," says Rob Hayles of the 28km of descending as he looks forward to the end of the stage.
"It could be difficult for anyone - certainly on their own - to try to go clear.
"Tomorrow is the big chance with the final climb up the Izoard."
get involved Get Involvedpublished at 14:41 British Summer Time 19 July 2017
#bbcycling
Where they are heading...
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Postpublished at 14:38 British Summer Time 19 July 2017
BBC Radio 5 live sports extraApologies for the slight technical hitch with our line from France but Simon Brotherton and Rob Hayles are back with you now.
You can listen to them on this page and on 5 live sports extra.
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End of twitter postget involved Get Involvedpublished at 14:37 British Summer Time 19 July 2017
#bbccycling
When you climb a mountain on a bike.....
60km to gopublished at 14:37 British Summer Time 19 July 2017
Alberto Contador is back with the lead group, who are 9km from the top of the Telegraphe.
They lead the peloton by 3.43.
Green for Matthewspublished at 14:34 British Summer Time 19 July 2017
"He has got that now - there is no doubt about that," says Rob Hayles of Michael Matthews' green jersey aspirations.
He adds that losing Kittel is a "huge blow" to the race.
Mechanical for Contadorpublished at 14:32 British Summer Time 19 July 2017
He coolly gets off his bike. Puts up his hand. Waits for the team car.
Not a great place for a problem. He now has 26 seconds to make up on the lead group. Uphill.
Image source, AFP