Defending champion Tadej Pogacar won stage 17 of the Tour de France in the Pyrenees on Wednesday, but he once again was shadowed over the line by Jonas Vingegaard, the race's overall leader.

With the bonus seconds for the win, UAE Team Emirates rider Pogacar now trails the Dane by two minutes and 18 seconds.

It was a third stage win of this year's Tour for the two-time defending champion, but his celebration was clouded with Jumbo-Visma's Vingegaard keeping a firm grip on the real prize.

Ineos leader Geraint Thomas dug deep to retain third place, zig-zagging over the final 16% incline and extending his lead on fourth-placed Nairo Quintana to almost three minutes.

At the bottom of the first climb on the packed roads, with camper vans and barbecues galore, a fan brandished a sign reading 'The Earth is Flat,' but after the three mountains on the menu, almost all the finishers ended lying exhausted flat on the floor.

At least they raced in the relative cool of the mountain air with temperatures round 24 degrees, rather than the baking 38 degrees of Tuesday's start and finish.

This year's Tour has entered its endgame, with one mountain stage and one time-trial the remaining real battle grounds to settle the debate over the yellow jersey.

The relentlessly attack-minded Pogacar, 23, was led up the final climb by Brandon McNulty, while willowy 25-year-old Vingegaard remained stony-faced in his slipstream most of the day.

On a day when Pogacar lost key lieutenant Rafal Majka through injury, the Slovenian said his teammates were running on emotional energy, and the feeling in the group was positive in their fight to claim back the top spot they lost in the Alps.

"We showed we are still strong as a team, and we are positive and motivated to go again tomorrow," he said. "We have been unlucky, but tomorrow we will give everything we have."

Pogacar admitted he missed all his absent teammates, with UAE Emirates now at four riders.

"If we had them all here, we would have made it a harder race for him (Vingegaard), and we will try again," he said.

Vingegaard himself was far from convinced the race was his yet.

"It isn't all in hand, but I'm happy with how it went," said the former fish market worker. "I have to keep an eye on him, because you never know which moment he'll attack. I only have to follow Tadej."

Battle Of Young And Old

In the battle for third place, veteran Thomas (below), 2018's champion, again proved doubters wrong as he dug deep after being dropped by the younger leading pair as his teammates Adam Yates and Tom Pidcock dropped away badly.

The 36-year-old Thomas appears to have won his struggle with Colombia's Quintana, in a battle of an older generation.

The top three looks settled, but the final order remains to be seen with Thursday's massive mountain slog to Hautacam and Saturday's 41km time-trial likely to wreak damage.

World Rugby Player of the Year, Toulouse and France scrum-half Antoine Dupont, who hails from the Pyrenees, was in the director's car to watch the globe's most prestigious cycling race.

Friday's stage will start in his home village of Castelnau-Magnoac.

"I came here many times when I was small, waiting more for the caravan than the riders. That's what the Tour's about, fighting for the water bottles.

"The legend continues," said a wistful Dupont adding that back in his childhood the heroes had been Andy Schleck and Alberto Contador, whose battle resembles the current one between Pogacar and Vingegaard.