It's a sunflower sort of day as the peloton chases the day's first escapers...
The escape is led by Thomas De Gendt, and they're building a lead of about four minutes...
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Joaquin Rodriguez seems happy with his Tour so far, as does his mate Alberto Losada...
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Chris Froome and Vincenzo Nibali are deep in talk about the Tour, a race they've both won already...
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Michael Matthews might be in with a chance today with the uphill finish and is recovery from the big stage three crash...
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Alexandre Geniez leads the escape north, but their lead hasn't gone much beyond four minutes still...
Sky leads the peloton across a sea of sunflowers, about 50-kilometres into the stage...
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Giant-Alpecin have started to chase with conviction, they fancy this stage for their powerful sprinter, John Degenkolb...
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It's getting hot and thirsty out there in the sun Kristijan Koren collects bottles for his Cannondale-Garmin teamates...
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Yohann Gene carries all kinds of bottles for his thristy teamates - and he needs to ride one-handed to support the weight of them..!
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Chris Froome is holding court to Tony Gallopin now, everyone wants to talk with the race-leader...
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Geniez seems to be cruising in the escape, but he'll be one of the first to drop back in an hour or so...
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Froome has stopped holding court to his rivals and settles down to have some lunch...
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Nibali is making his second wheel-change in a few minutes, but he's burnt his hand taking the front wheel out after a long descent..!
Nibali gets a generous push from his mechanic and will soon get back into the race...
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Giant-Alpecin are working hard now, the gap has come down to two minutes but stayed there too long...
Tyler Farrar is suffering in the heat, and he's about to suffer more in the hills at the end of the stage...
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Sam Bennett has blown up because of the heat - he'll lose 21 minutes on the stage today...
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Jean-Christophe Peraud has crashed heavily on the scorching road - the loss of skin speaks for itself...
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Peraud has got back to the peloton but is in all kinds of pain with his injuries...
Michael Rogers has now taken Tinkoff to the front of the peloton to chase...
Peter Sagan is the red-hot favourite today, and he's right near the front with his Tinkoff mates...
John Degenkolb is also near the front, but his form so far makes him doubtful to win...
Tejay Van Garderen is protecting Greg Van Avermaet who is BMC's man for this uphill finish...
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Nathan Haas has jumped away from the escape with 20-kilometres left - but they'll bring him back very quickly...
Simon Yates has taken over the chasing for Orica-Green Edge in the final 15-kilometres, bringing the gap down to less than one-minute...
De Gendt leads Kelderman and Gauthier into Rodez near the end of their long, long escape...
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Greg Van Avermaet has beaten Peter Sagan to win stage thirteen - what a surprise..!
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Greg Van Avermaet celebrates while Sagan curses - the Tinkoff 'star has yet to win a stage in the Tour..!