Right folks, it's time for me to depart. Thanks for your company today, another stage ticked off the list as we pedal to Paris.
Tomorrow's stage has all the makings of a classic, with four big climbs spread over just 125km and yellow jersey holder Vincenzo Nibali will be looking to cement his lead.
So I'll see you tomorrow. Until then, it's good afternoon from me.
Post update
Magnus Backstedt
Former Tour de France stage winner on BBC Radio 5 live sports extra
"Michael has got such a vast amount of experience and a lot of power and you can see that he really enjoys riding his bike, he's willing to go that bit deeper."
Post update
Here's the stage 17 report, won by Michael Rogers, which features analysis from former Tour de France stage winner Magnus Backstedt.
Tomorrow - Stage 17
After the longest stage on the Tour today, we visit the shortest tomorrow. It's 125km race from Saint-Gaudens to Saint-Lary Pla d'Adet and could have a big impact on the general classification as there are four big climbs. Team Sky rider Geraint Thomas believes tomorrow will be one of the "hardest days of this year's race."
Post update
Michael Rodgers, a three-times world champion in the individual time trial, receives his trophy and flowers on the podium. The Australian looks like he's welling up as he takes the applause.
Rogers added: "I tried so hard to win a stage of the Tour before but this year, I've changed mentally. When it rains it pours doesn't it?
"I know I've changed upstairs, I'm more hungry and opportunities seem clearer to me now. I'm not scared of the outcome now. Previously I was scared to try something new because I was scared of failure."
EPACopyright: EPA
Post update
"I knew once I got to the bottom of the last climb, the race had began for me," says stage winner Michael Rogers. "I tried a few times to drop them on the climb but I couldn't so I knew I had to pick them off on the descent. I said to myself - 'I have been in this position to many times and not won. I'm not going to do it again.'"
AFPCopyright: AFP
Post update
Yellow Jersey
Classification
Vincenzo Nibali, the yellow jersey holder, and Alejandro Valverde, who is second overall, cross the line together about nine minutes down on the leaders. They will still retain the top two spots in the general classification, though.
Stage 16 - Top 5
1) Michael Rogers (Tinkoff-Saxo)
2) Thomas Voeckler (Europcar)
3) Vasil Kiriyenka (Sky)
4) Jose Serpa (Lampre)
5) Cyril Gautier (Europcar)
Post update
Magnus Backstedt
Former Tour de France stage winner on BBC Radio 5 live sports extra
"What a year he is having, he's riding strong and he is confident, this was a stage that was tailor made for him and once he got the gap there was no coming back to him."
APCopyright: AP
Post update
That's 34-year-old Michael Rogers first stage victory on the Tour and follows his two stage wins at the Giro d'Italia earlier this year.
CHAMPAGNE MOMENT
Michael Rogers wins stage 16 of the Tour de France.
Post update
Michael Rogers passes the 1km mark. He looks to have done enough to take this victory.
Post update
We're inside the last 2km with Michael Rogers holding an eight-second lead. Vasil Kiryienka has gone for it, getting out of the saddle and giving it a push. Can he catch Rogers?
Post update
We're nearing the end of the descent now, with just 5km to go. Meanwhile, up front Michael Rogers has made a bid for glory.
Cyril Gautier is his nearest challenger and tries his best to keep up. Serpa, Voeckler and Kiryienka seem content to let him go.
Get involved #bbccycling
Toniwater: "Vincenzo Nibali won't miss a trick this week he's too close, he'll respond to everything and it looks like he's in his element when doing that!"
Post update
It's now a five-man group at the front as Cyril Gautier and Vasil Kiryienka catch up. Meanwhile, Alejandro Valverde has been towed back to yellow jersey holder Vincenzo Nibali. They're just over 10 minutes and 23 seconds behind.
Post update
Michael Rogers, Jose Serpa and Thomas Voeckler are cruising down the descent at the front. They've got a 12 second-lead over Cyril Gautier and Vasil Kiryienka.
Post update
Alejandro Valverde, who is second in the general classification, has been dropped by Thibaut Pinot. Vincenzo Nibali tries to stick with him but can't as they begin the descent. Pinot immediately opens up a lead of 200m as they fly down the mountain.
Post update
Jose Serpa beats Thomas Voeckler to the summit at Port de Bales to take the maximum 25 points.
Post update
Magnus Backstedt
Former Tour de France stage winner on BBC Radio 5 live sports extra
"It's a very fast descent, there are plenty of opportunities to really increase your speed and you can dive around the corners without touching the brakes. The riders will know the corners and have raced here before so it's a case of refreshing the memory."
Post update
Vasil Kiryienka catches Cyril Gautier and the pair work together to reduce the 15 second-gap to the leading trio of Rogers, Serpa and Voeckler. Less than 20km to go.
Post update
Thibaut Pinot, currently fourth in the general classification, begins his bid to move into the podium places as he accelerates off the front of the peloton. Yellow jersey holder Vincenzo Nibali - and second-placed Alejandro Valverde - respond and go with him.
Post update
Movistar are dragging the peloton along, which is putting yellow jersey holder Vincenzo Nibali under pressure. The Italian must respond to protect his lead.
Post update
Cyril Gautier has run out of steam, falling back as Michael Rogers, Jose Serpa and Thomas Voeckler, who won this stage last year.
Post update
Polkadot Jersey
Classification
The peloton has closed to within 10 minutes and 28 seconds, but it has dropped Britain's Geraint Thomas and Joaquim Rodriguez, who is the current polka jersey holder. Rafal Majka is set to take the best climber jersey, with Rodriguez now a point behind.
Post update
Cyril Gautier has bolted - and for now, no one seems able to give chase. Team Sky's Vasil Kiryienka has dropped back, with Rogers, Serpa and Voeckler sticking together and trying to keep Gautier in sight.
Post update
The breakaway has split in two, with Avermaet, Serpa, Kiriyenka, Voeckler, Gautier and Rogers going clear.
Post update
Frenchman Thomas Voeckler raises a cheer from the crowd as he launches a mini-attack, getting out of the saddle and pushing - but his time alone out front is minimal as the rest of the breakaway gobbles him up.
Former Tour de France stage winner Magnus Backstedt: "Vincenzo Nibali is a racer, down to the bones, so if he sees there is a crack in the armoury of his challengers he will go for it on the descent. Whenever he can add to the lead he will do."
Post update
Vincenzo Nibali is sitting comfortable in the peloton, 11 minutes and 38 seconds adrift of the peloton. Meanwhile, up front, the breakaway is starting to stretch out even more with Michael Rogers now on the front and pushing.
Post update
Team Sky's Vasil Kiryienka move to the front of the breakaway and puts the hammer down, stretching out the breakaway as they continue to climb.
APCopyright: AP
Post update
Twenty one becomes 20 as Roger Kluge is the first rider to be dropped from the breakaway as the climb intensifies. He's soon joined by Samuel Dumoulin who also can't keep pace.
Post update
Former Tour de France stage winner and BBC Radio 5 live sports extra analyst Magnus Backstedt says that while there are a couple of sharp turns on the descent to the finish, there is "nothing too bad". He adds: "There are some nice long straights where you can hit some big speeds."
Post update
The breakaway responds by upping their pace as they approach the bottom of the Port de Bales. There are a few parts of this climb where the gradient hits more than 10%. Yikes.
Post update
The peloton has picked up the pace, reducing the gap to the breakaway to 12 minutes and nine seconds with 35.5km to go.
Post update
Magnus Backstedt
Former Tour de France stage winner on BBC Radio 5 live sports extra
"It looks like the breakaway is going to hold. One rider to look out for is Michal Kwiatkowski.
"He started the day 19 minutes down but should this time gap stand, he's riding himself well into the top 10.
"He's a rider who can time-trial very well, too, so while he might not win it, he could challenge for the podium."
Rob Hatch and Magnus Backstedt are up and running on BBC Radio 5 live sports extra. You can listen to them via the console at the top of the page.
BBCCopyright: BBC
Post update
Just 40km to go in the longest stage of the Tour and first of three stages in the Pyrenees. The breakaway has a lead of 12 minutes and 25 seconds.
Flashback
Getty ImagesCopyright: Getty Images
The Port de Bales played a crucial role in the 2010 Tour as it was when the race leader Andy Schleck had a mechanical neat the summit and Alberto Contador attacked, taking the top spot overall.
Contador went on to win the race, but was disqualified after failing a dope test. Schleck was declared the winner.
Post update
The Port de Bales is a Hors Categorie climb of 11.7km at a gradient of 7.7%. The breakaway are just approaching the bottom with the peloton - which features Vincenzo Nibali - 11 minutes and 46 seconds adrift.
Post update
Le Tour de FranceCopyright: Le Tour de France
Britain's Mark Cavendish, who required shoulder surgery after crashing out of the race on the first stage, is doing today's route - but in the Omega Pharma Quick-Step team car, rather than his bike. The Briton hasn't set a date for his competitive return yet.
Post update
With the Col des Ares now a distant memory for the breakaway, only the testing Port de Bales climb remains. Reach the summit there and it's a fast descent all the way to the finish.
Get involved
John McEnerney: Only an accident is likely 2 stop VN being in yellow at tea time, he'll play it safe unless AV attacks it's now or never for Val.
Post update
Polkadot Jersey
Classification
Thomas Voeckler takes the maximum two points as he reaches the summit of the Col de Ares first.
The Frenchman remains part of a 21-man breakaway which continues to pull away from the peloton.
The gap is up to 11 minutes and 25 seconds and is the biggest we've seen in the whole of this Tour.
Post update
Alberto ContadorCopyright: Alberto Contador
Two-time champion Alberto Contador had to withdraw from this year's race after a heavy crash on stage 10.
The Spaniard fractured a bone in his right leg and today posted a picture of himself as he continues his recovery.
He tweeted: "Hello everyone, getting better little by little, but much more slowly than I wanted. Always well accompanied. #daybyday
Post update
Getty ImagesCopyright: Getty Images
I'm in no doubt it's a great view, but I definitely would not fancy watching this stage from way up there...
Post update
PACopyright: PA
While it's mostly been bad news from a British perspective in this year's Tour, I do have some good news to report.
Mark Cavendish, who crashed out on the first stage, is back on a bike following shoulder surgery.
"[On Sunday] I went out with my bike on the road for the first time after the injury, but as of now I can't really say when I will be racing again," says the 25-Tour stage winner, who visited his team-mates during the rest day on Monday.
Post update
Polkadot Jersey
Classification
ReutersCopyright: Reuters
Thomas Voeckler grabbed the maximum five points for going over the the Col de Portet-d'Aspet. That moves him into sixth in the battle for the polka dot jersey, but he still trails Rafal Majka by 60 points.
Get involved
Can anyone stop Vincenzo Nibali winning the yellow jersey? Do you think the breakway will be caught today? Who is your favourite for the stage win and why?
Tweet your answers - or any other cycling-related chat - using the #bbccycling hashtag or by texting 81111 (UK only), remembering to add your name to those SMS messages.
Post update
Yellow Jersey
Classification
Vincenzo Nibali is in the yellow jersey, the race leader holding a four minute and 37 second lead over Alejandro Valverde, with Romain Bardet a further 13 seconds back.
The good news for the Italian is that no one in the breakaway, which is now 10 minutes and 36 seconds clear, is a contender for the general classification, so he'll almost certainly retain the yellow.
"There is a 20km descent to the finish where we drop almost 1,000m in altitude so it will be a fast pace. It's pretty much man v man on a descent, as fast as you feel confident going.
"If it is was long and a bit flatter you could get help from your team-mates but I've been to see this one and it's steep and technical so you're on your own."
Of the 198 riders which started, just 169 remain as we enter the third week of the Tour.
World road race champion Rui Costa is the latest high-profile cyclist to withdraw after an outbreak of pneumonia.
The Portuguese rider was 13th in the overall standings, behind leader Vincenzo Nibali.
The 27-year-old's Lampre-Merida team said he was suffering from "a general state of fatigue".
Post update
A day of rest on Monday meant a breakaway attempt on the longest stage of the Tour, from Carcassonne to Bagneres-de-Luchon, was guaranteed today - and we haven't been disappointed.
The stage is already under way with 74km of the 237km remaining. There is a 21-man breakaway and they have a huge 10 minute and 16 second lead.
They've already cleared the Col de Portet-d'Aspet - just two more ascents, including the challenging Port de Bales.
Post update
ReutersCopyright: Reuters
Afternoon all and welcome to live text commentary of stage 16 of the Tour de France.
After the last of only two rest days during the 21-stage race, the riders are now faced with five more lung-busting days in the saddle before they cruise into Paris, champagne in hand, for the finale on Sunday.
Post update
"I thought my head was going to explode". That's not a sentence I ever want to find myself saying but that's exactly how Geraint Thomas described his physical condition as he completed the first day in the mountains on Friday.
Geraint Thomas is Britain's last man standing (or rather sitting) in the Tour de France after Simon Yates was withdrawn after the last stage on Sunday night.
The 21-year-old made an impressive debut for Orica GreeEdge, but follows countrymen Chris Froome and Mark Cavendish on an early flight home.
Live Reporting
Lawrence Barretto
All times stated are UK
Get involved
APCopyright: AP EPACopyright: EPA AFPCopyright: AFP APCopyright: AP APCopyright: AP BBCCopyright: BBC Getty ImagesCopyright: Getty Images Le Tour de FranceCopyright: Le Tour de France Alberto ContadorCopyright: Alberto Contador Getty ImagesCopyright: Getty Images PACopyright: PA ReutersCopyright: Reuters EPACopyright: EPA ReutersCopyright: Reuters Getty ImagesCopyright: Getty Images
Latest PostPost update
Right folks, it's time for me to depart. Thanks for your company today, another stage ticked off the list as we pedal to Paris.
Tomorrow's stage has all the makings of a classic, with four big climbs spread over just 125km and yellow jersey holder Vincenzo Nibali will be looking to cement his lead.
So I'll see you tomorrow. Until then, it's good afternoon from me.
Post update
Magnus Backstedt
Former Tour de France stage winner on BBC Radio 5 live sports extra
"Michael has got such a vast amount of experience and a lot of power and you can see that he really enjoys riding his bike, he's willing to go that bit deeper."
Post update
Here's the stage 17 report, won by Michael Rogers, which features analysis from former Tour de France stage winner Magnus Backstedt.
Tomorrow - Stage 17
After the longest stage on the Tour today, we visit the shortest tomorrow. It's 125km race from Saint-Gaudens to Saint-Lary Pla d'Adet and could have a big impact on the general classification as there are four big climbs. Team Sky rider Geraint Thomas believes tomorrow will be one of the "hardest days of this year's race."
Post update
Michael Rodgers, a three-times world champion in the individual time trial, receives his trophy and flowers on the podium. The Australian looks like he's welling up as he takes the applause.
Overall standings
Yellow Jersey
Classification
1) Vincenzo Nibali (Ita/Astana) 73hrs 05mins 19secs
2) Alejandro Valverde (Spa/Movistar) +4mins 37secs
3) Thibaut Pinot (Fra/FDJ.fr) +5mins 06secs
4) Jean-Christophe Peraud (Fra/AG2R) +6mins 08secs
5) Romain Bardet (Fra/AG2R) +6mins 40secs
Post update
Rogers added: "I tried so hard to win a stage of the Tour before but this year, I've changed mentally. When it rains it pours doesn't it?
"I know I've changed upstairs, I'm more hungry and opportunities seem clearer to me now. I'm not scared of the outcome now. Previously I was scared to try something new because I was scared of failure."
Post update
"I knew once I got to the bottom of the last climb, the race had began for me," says stage winner Michael Rogers. "I tried a few times to drop them on the climb but I couldn't so I knew I had to pick them off on the descent. I said to myself - 'I have been in this position to many times and not won. I'm not going to do it again.'"
Post update
Yellow Jersey
Classification
Vincenzo Nibali, the yellow jersey holder, and Alejandro Valverde, who is second overall, cross the line together about nine minutes down on the leaders. They will still retain the top two spots in the general classification, though.
Stage 16 - Top 5
1) Michael Rogers (Tinkoff-Saxo)
2) Thomas Voeckler (Europcar)
3) Vasil Kiriyenka (Sky)
4) Jose Serpa (Lampre)
5) Cyril Gautier (Europcar)
Post update
Magnus Backstedt
Former Tour de France stage winner on BBC Radio 5 live sports extra
"What a year he is having, he's riding strong and he is confident, this was a stage that was tailor made for him and once he got the gap there was no coming back to him."
Post update
That's 34-year-old Michael Rogers first stage victory on the Tour and follows his two stage wins at the Giro d'Italia earlier this year.
CHAMPAGNE MOMENT
Michael Rogers wins stage 16 of the Tour de France.
Post update
Michael Rogers passes the 1km mark. He looks to have done enough to take this victory.
Post update
We're inside the last 2km with Michael Rogers holding an eight-second lead. Vasil Kiryienka has gone for it, getting out of the saddle and giving it a push. Can he catch Rogers?
Post update
We're nearing the end of the descent now, with just 5km to go. Meanwhile, up front Michael Rogers has made a bid for glory.
Cyril Gautier is his nearest challenger and tries his best to keep up. Serpa, Voeckler and Kiryienka seem content to let him go.
Get involved #bbccycling
Toniwater: "Vincenzo Nibali won't miss a trick this week he's too close, he'll respond to everything and it looks like he's in his element when doing that!"
Post update
It's now a five-man group at the front as Cyril Gautier and Vasil Kiryienka catch up. Meanwhile, Alejandro Valverde has been towed back to yellow jersey holder Vincenzo Nibali. They're just over 10 minutes and 23 seconds behind.
Post update
Michael Rogers, Jose Serpa and Thomas Voeckler are cruising down the descent at the front. They've got a 12 second-lead over Cyril Gautier and Vasil Kiryienka.
Post update
Alejandro Valverde, who is second in the general classification, has been dropped by Thibaut Pinot. Vincenzo Nibali tries to stick with him but can't as they begin the descent. Pinot immediately opens up a lead of 200m as they fly down the mountain.
Post update
Jose Serpa beats Thomas Voeckler to the summit at Port de Bales to take the maximum 25 points.
Post update
Magnus Backstedt
Former Tour de France stage winner on BBC Radio 5 live sports extra
"It's a very fast descent, there are plenty of opportunities to really increase your speed and you can dive around the corners without touching the brakes. The riders will know the corners and have raced here before so it's a case of refreshing the memory."
Post update
Vasil Kiryienka catches Cyril Gautier and the pair work together to reduce the 15 second-gap to the leading trio of Rogers, Serpa and Voeckler. Less than 20km to go.
Post update
Thibaut Pinot, currently fourth in the general classification, begins his bid to move into the podium places as he accelerates off the front of the peloton. Yellow jersey holder Vincenzo Nibali - and second-placed Alejandro Valverde - respond and go with him.
Post update
Movistar are dragging the peloton along, which is putting yellow jersey holder Vincenzo Nibali under pressure. The Italian must respond to protect his lead.
Post update
Cyril Gautier has run out of steam, falling back as Michael Rogers, Jose Serpa and Thomas Voeckler, who won this stage last year.
Post update
Polkadot Jersey
Classification
The peloton has closed to within 10 minutes and 28 seconds, but it has dropped Britain's Geraint Thomas and Joaquim Rodriguez, who is the current polka jersey holder. Rafal Majka is set to take the best climber jersey, with Rodriguez now a point behind.
Post update
Cyril Gautier has bolted - and for now, no one seems able to give chase. Team Sky's Vasil Kiryienka has dropped back, with Rogers, Serpa and Voeckler sticking together and trying to keep Gautier in sight.
Post update
The breakaway has split in two, with Avermaet, Serpa, Kiriyenka, Voeckler, Gautier and Rogers going clear.
Post update
Frenchman Thomas Voeckler raises a cheer from the crowd as he launches a mini-attack, getting out of the saddle and pushing - but his time alone out front is minimal as the rest of the breakaway gobbles him up.
Post update
BBC Radio 5 live sports extra
Former Tour de France stage winner Magnus Backstedt: "Vincenzo Nibali is a racer, down to the bones, so if he sees there is a crack in the armoury of his challengers he will go for it on the descent. Whenever he can add to the lead he will do."
Post update
Vincenzo Nibali is sitting comfortable in the peloton, 11 minutes and 38 seconds adrift of the peloton. Meanwhile, up front, the breakaway is starting to stretch out even more with Michael Rogers now on the front and pushing.
Post update
Team Sky's Vasil Kiryienka move to the front of the breakaway and puts the hammer down, stretching out the breakaway as they continue to climb.
Post update
Twenty one becomes 20 as Roger Kluge is the first rider to be dropped from the breakaway as the climb intensifies. He's soon joined by Samuel Dumoulin who also can't keep pace.
Post update
Former Tour de France stage winner and BBC Radio 5 live sports extra analyst Magnus Backstedt says that while there are a couple of sharp turns on the descent to the finish, there is "nothing too bad". He adds: "There are some nice long straights where you can hit some big speeds."
Post update
The breakaway responds by upping their pace as they approach the bottom of the Port de Bales. There are a few parts of this climb where the gradient hits more than 10%. Yikes.
Post update
The peloton has picked up the pace, reducing the gap to the breakaway to 12 minutes and nine seconds with 35.5km to go.
Post update
Magnus Backstedt
Former Tour de France stage winner on BBC Radio 5 live sports extra
"It looks like the breakaway is going to hold. One rider to look out for is Michal Kwiatkowski.
"He started the day 19 minutes down but should this time gap stand, he's riding himself well into the top 10.
"He's a rider who can time-trial very well, too, so while he might not win it, he could challenge for the podium."
Post update
BBC Radio 5 live sports extra
Rob Hatch and Magnus Backstedt are up and running on BBC Radio 5 live sports extra. You can listen to them via the console at the top of the page.
Post update
Just 40km to go in the longest stage of the Tour and first of three stages in the Pyrenees. The breakaway has a lead of 12 minutes and 25 seconds.
Flashback
The Port de Bales played a crucial role in the 2010 Tour as it was when the race leader Andy Schleck had a mechanical neat the summit and Alberto Contador attacked, taking the top spot overall.
Contador went on to win the race, but was disqualified after failing a dope test. Schleck was declared the winner.
Post update
The Port de Bales is a Hors Categorie climb of 11.7km at a gradient of 7.7%. The breakaway are just approaching the bottom with the peloton - which features Vincenzo Nibali - 11 minutes and 46 seconds adrift.
Post update
Britain's Mark Cavendish, who required shoulder surgery after crashing out of the race on the first stage, is doing today's route - but in the Omega Pharma Quick-Step team car, rather than his bike. The Briton hasn't set a date for his competitive return yet.
Post update
With the Col des Ares now a distant memory for the breakaway, only the testing Port de Bales climb remains. Reach the summit there and it's a fast descent all the way to the finish.
Get involved
John McEnerney: Only an accident is likely 2 stop VN being in yellow at tea time, he'll play it safe unless AV attacks it's now or never for Val.
Post update
Polkadot Jersey
Classification
Thomas Voeckler takes the maximum two points as he reaches the summit of the Col de Ares first.
The Frenchman remains part of a 21-man breakaway which continues to pull away from the peloton.
The gap is up to 11 minutes and 25 seconds and is the biggest we've seen in the whole of this Tour.
Post update
Two-time champion Alberto Contador had to withdraw from this year's race after a heavy crash on stage 10.
The Spaniard fractured a bone in his right leg and today posted a picture of himself as he continues his recovery.
He tweeted: "Hello everyone, getting better little by little, but much more slowly than I wanted. Always well accompanied. #daybyday
Post update
I'm in no doubt it's a great view, but I definitely would not fancy watching this stage from way up there...
Post update
While it's mostly been bad news from a British perspective in this year's Tour, I do have some good news to report.
Mark Cavendish, who crashed out on the first stage, is back on a bike following shoulder surgery.
"[On Sunday] I went out with my bike on the road for the first time after the injury, but as of now I can't really say when I will be racing again," says the 25-Tour stage winner, who visited his team-mates during the rest day on Monday.
Post update
Polkadot Jersey
Classification
Thomas Voeckler grabbed the maximum five points for going over the the Col de Portet-d'Aspet. That moves him into sixth in the battle for the polka dot jersey, but he still trails Rafal Majka by 60 points.
Get involved
Can anyone stop Vincenzo Nibali winning the yellow jersey? Do you think the breakway will be caught today? Who is your favourite for the stage win and why?
Tweet your answers - or any other cycling-related chat - using the #bbccycling hashtag or by texting 81111 (UK only), remembering to add your name to those SMS messages.
Post update
Yellow Jersey
Classification
Vincenzo Nibali is in the yellow jersey, the race leader holding a four minute and 37 second lead over Alejandro Valverde, with Romain Bardet a further 13 seconds back.
The good news for the Italian is that no one in the breakaway, which is now 10 minutes and 36 seconds clear, is a contender for the general classification, so he'll almost certainly retain the yellow.
Post update
Geraint Thomas
Team Sky's five-time Tour de France rider
"There is a 20km descent to the finish where we drop almost 1,000m in altitude so it will be a fast pace. It's pretty much man v man on a descent, as fast as you feel confident going.
"If it is was long and a bit flatter you could get help from your team-mates but I've been to see this one and it's steep and technical so you're on your own."
Read more on the remaining days in Geraint's stage-by-stage guide.
Post update
Of the 198 riders which started, just 169 remain as we enter the third week of the Tour.
World road race champion Rui Costa is the latest high-profile cyclist to withdraw after an outbreak of pneumonia.
The Portuguese rider was 13th in the overall standings, behind leader Vincenzo Nibali.
The 27-year-old's Lampre-Merida team said he was suffering from "a general state of fatigue".
Post update
A day of rest on Monday meant a breakaway attempt on the longest stage of the Tour, from Carcassonne to Bagneres-de-Luchon, was guaranteed today - and we haven't been disappointed.
The stage is already under way with 74km of the 237km remaining. There is a 21-man breakaway and they have a huge 10 minute and 16 second lead.
They've already cleared the Col de Portet-d'Aspet - just two more ascents, including the challenging Port de Bales.
Post update
Afternoon all and welcome to live text commentary of stage 16 of the Tour de France.
After the last of only two rest days during the 21-stage race, the riders are now faced with five more lung-busting days in the saddle before they cruise into Paris, champagne in hand, for the finale on Sunday.
Post update
"I thought my head was going to explode". That's not a sentence I ever want to find myself saying but that's exactly how Geraint Thomas described his physical condition as he completed the first day in the mountains on Friday.
Read more from Geraint in his BBC Sport column.
Post update
And then there was one.
Geraint Thomas is Britain's last man standing (or rather sitting) in the Tour de France after Simon Yates was withdrawn after the last stage on Sunday night.
The 21-year-old made an impressive debut for Orica GreeEdge, but follows countrymen Chris Froome and Mark Cavendish on an early flight home.