Postpublished at 16:18 British Summer Time 18 July 2016
5km to go
Now the peloton is getting stretched and Rui Costa is caught. IAM Cycling take it on and Michael Matthews is up there too.
Sagan wins stage on photo finish
Froome remains in yellow
Stage 16: Moirans-en-Montagne - Berne, 209km (129.9 miles)
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Alistair Magowan
5km to go
Now the peloton is getting stretched and Rui Costa is caught. IAM Cycling take it on and Michael Matthews is up there too.
7km to go
Rui Costa still 12 seconds out in front. The peloton, led by Steve Cummings, is doing plenty to dodge round the roundabouts and the cones in the road.
Dodgy with a capital D.
8km to go
Rob Hayles
Former GB cyclist on BBC 5 live sports extra
Rui Costa's lead is unbelievable and at the moment, there is plenty for the peloton to negotiate in terms of road furniture. This is so messy and it starts to play into the hands of Costa.
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10km to go
Rob Hayles
Former GB cyclist on BBC 5 live sports extra
Luke Rowe and Ian Stannard are the only Team Sky rides with Chris Froome but if you wanted any two riders alongside you, it would be them.
11km to go
Lots of Astana riders move to the front of the peloton now to join BMC. Rui Costa is 11 seconds in front.
12km to go
Rob Hatch
BBC Radio 5 live commentator
It's not been the easy day that everyone thought, maybe the fatigue is kicking in. BMC are looking good, though, and there is a pressure for them to win. Their billionaire owner is from Bern so would like a home win.
13km to go
Chris Froome looks like he has a few more team-mates for comfort now as Rui Costa carves out a 17-second lead.
This could get tasty. The approach is technical and don't forget about those cobbles.
14km to go
Rob Hatch
BBC Radio 5 live commentator on 5 live sports extra
Chris Froome is a little bit isolated in the peloton, so he needs to be cautious.
There are a lot of riders being dropped as they approach the final climb into town.
18km to go
Lampre-Merida's Rui Costa has made a break as the sun beats down on the approach to the Swiss capital, Bern. He's 13 seconds ahead.
What do you mean you thought the capital was Zurich?
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The unique nature of the finish today opens up the possibilities for a whole phalanx of riders winning the stage.
OJ Borg and editor of Pro Cycling magazine Edward Pickering have been taking a look at the hills and the cobbles which will greet the riders in the next 15 minutes or so.
You can watch the video here, external if you are on the app.
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22km to go
Not long now until the end of the stage as Astana launch an attack to catch Tony Martin, who quickly falls to the back of the peloton. Britain's Steve Cummings is up there challenging the race leaders now.
25km to go
Even though Tony Martin has been pushing the pace all day, it's Julian Alaphilippe who stands up and calls time on the breakaway. German Martin looks back with some surprise but continues out in front with a 21 second gap as he approaches the top of the category four climb, the Cote de Muhleberg, to earn a king of the mountains point.
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27km to go
Tony Martin and Julian Alaphilippe are sharing a joke now as they realise the game is up. It's been a fine effort from the Etixx-QuickStep pair as the gap reduces to 40 seconds.
29km to go
Team Dimension Data, Tinkoff, BMC and Direct Energie are all jostling for position at the head of the peloton.
They have the Etixx-QuickStep riders in their sights now as they traverse a couple of open fields.
32km to go
Britain's Steve Cummings (Dimension Data) appears at the front of the peloton. It's exactly a year since he grabbed a landmark victory on Nelson Mandela Day with his South-African team hoping to repeat their success.
Tony Martin and Julian Alaphilippe are still in front but the gap to the peloton has reduced to under a minute.
Rob Hayles
Former GB cyclist on BBC 5 live sports extra
There is a lot of hype around Fabian Cancellara, not so much over the last few years, but when he was at his best, he was absolutely incredible. And in stages very similar to today's stage, using his time-trial skills to attack.
He is a rider I raced with in back in 2001 or 2002 at the start of his career so to watch his career go stratospheric, has been interesting. His team will miss him but they maybe won't miss the funds his contract absorbs.