Stage 18: Lourdes - Hautacam,143.2km
The last high-altitude test of the race features the legendary Col d'Aubisque
Iconic finish at Hautacam in stage with two hors category climbs
Jonas Vingegaard in leader's yellow jersey with 2mins 18secs lead over Tadej Pogacar
Britain's Geraint Thomas third overall, 4mins 56secs off lead
Wout van Aert calls for Dani Martinez to contribute - and the Ineos Grendiers rider obliges.
They have just over one minute over the yellow jersey group, which is now down to Sepp Kuss, Jonas Vingegaard, Tadej Pogacar and Geraint Thomas.
The front three are into the final 10km.
Thibaut Pinot is hunting his first stage win since triumphing on the Tourmalet in 2019.
He'd been getting slightly frustrated that Wout van Aert wasn't doing any work, the Belgian primarily concerned about ensuring Jonas Vingegaard is safe behind.
But off goes Van Aert! Martinez follows, but Pinot is gone.
Sepp Kuss is guiding Jonas Vingegaard up the Hautacam, with Tadej Pogacar and Geraint Thomas still in touch. The calm before the next storm?
Thibaut Pinot is going for it!
The Frenchman is pushing on at the front, but so far he hasn't been able to get rid of Wout van Aert or Dani Martinez.
What has Tadej Pogacar got left in the tank?
He has 13km left to try something special.
Are you ready for this?
We're on the Hautacam.
Wout van Aert, Thibaut Pinot and Dani Martinez remain out in front, two minutes and 25 seconds clear and, whisper it quietly, they'll be starting to dream of a stage win.
Tadej Pogacar and Jonas Vingegaard have been rejoined before the final climb by Geraint Thomas, Louis Meintjes and Jumbo Visma pair Sepp Kuss and Tiesj Benoot.
In all, five Tour stages have previously ended at the top of the climb to Hautacam.
Among those occasions, Luc Leblanc triumphed over Miguel Indurain at the resort in 1994, while Cadel Evans took the lead in the 2008 overall classification for the first time by moving one second ahead of Frank Schleck.
In 2014, Vincenzo Nibali clinched the yellow jersey three days before his coronation in Paris.
Image source, Getty ImagesWe're closing in on the start of the final climb of the day. And what a climb it is going to be.
The ascent to Hautacam begins with 13.8km remaining. A lot can happen yet.
Wout van Aert, Dani Martinez and Thibaut Pinot remain at the front of the race, with Tadej Pogacar and Jonas Vingegaard two minutes behind after a scary few moments for the general classification top two.
Moments after Jonas Vingegaard just about managed to prevent himself suffering a fall on the descent, Tadej Pogacar hits the ground!
The defending champion is pushing on at every opportunity but overdoes it on a corner and slides out on the gravel.
Vingegaard, though, waits up, and the pair shake hands as Pogacar acknowledges the decision by his rival.
Geraint Thomas is joined by Louis Meintjes and Jumbo Visma pair Sepp Kuss and Tiesj Benoot at round 30 seconds behind Tadej Pogacar and Jonas Vingegaard.
Away goes Tadej Pogacar again as the pair roll over the top of the Col de Spandelles.
But Jonas Vingegaard just won't go away.
Just over 30 kilometres - and the hors categorie Hautacam ascent - to go. It's going to be epic.
Tadej Pogacar continues to press on with Jonas Vingegaard stuck to his wheel.
Has there ever been a general classification fight quite like this? The top two enter the final kilometre of the category one climb as Wout van Aert sweeps up the mountain points at the front of the race.
We're down to just Tadej Pogacar and Jonas Vingegaard again, with Wout van Aert, Thibaut Pinot and Dani Martinez still two minutes away.
Geraint Thomas is around 20 seconds back now after his sneaky attack.
Tadej Pogacar goes again - and this time there's a gap!
It's a huge effort - they sweep past Geraint Thomas - but he can't sustain it for long enough and Jonas Vingegaard does close it down.
Geraint Thomas distances Tadej Pogacar, Jonas Vingegaard and Sepp Kuss.
In third spot, he is only a danger to Pogacar, but Pogacar is only going to be interested in the yellow jersey from here.
Thomas has Dani Martinez up the road too. This could be some move!
A fourth attack from Tadej Pogacar with four kilometres of the Col de Spandelles to go.
But, once again, Jonas Vingegaard follows. Sepp Kuss gets back onto them - as does Geraint Thomas.
And Thomas goes for it!
Right at the front, only Wout van Aert, Thibaut Pinot and Daniel Martinez remain.
Behind them, Tadej Pogacar goes again!
Jonas Vingegaard follows again.
This has to be it for the final 36km. The defending champion has to try everything now.
Tadej Pogacar and Jonas Vingegaard reach the second group on the road and are two minutes and 26 seconds behind the Wout van Aert group at the front of the race.
Geraint Thomas has fallen around 40 seconds behind the top two, who have now been rejoined by Vingegaard's Jumbo Visma team-mate Sepp Kuss.
Jonas Vingegaard is joined by Sepp Kuss, Tadej Pogacar has Brandon McNulty, while Geraint Thomas, Adam Yates, Nairo Quintana, David Gaudu, Michael Storer, Romain Bardet and Alexander Vlasov also remain in touch as the yellow jersey group is whittled down to 11 members.
And there goes Pogacar!
The defending champion makes his move and, as expected, only Vingegaard can go with him.
Over five kilometres of the Col de Spandelles to go, before the ascent to Hautacam.