Matej Mohoric won stage 19 of the Tour de France in a photo finish at the end of a furious day’s racing in the Jura.

Mohoric and Thursday’s winner Kasper Asgreen came to the line neck and neck, with Ben O’Connor third, after the trio broke away from a 37-strong breakaway when it broke into several pieces on the final climb some 30 kilometres from the end of the 173km stage from Moirans-en-Montagne to Poligny.

A stage characterised by non-stop attacking was raced at an average speed of 49.1kmh over rolling terrain, the fastest stage of this year’s Tour and the fifth fastest ever, but after all that effort it came down to a bike throw on the line.

O’Connor launched his sprint first 400 metres from the finish but knew it was a doomed move against two faster men. Asgreen was the first to come around but Mohoric timed it perfectly to take victory by a tyre’s width.

The front three came in just shy of 40 seconds clear of a chasing group, with Jasper Philipsen repeating his fourth place of 24 hours earlier.

There was no change at the top of the general classification, with race leader Jonas Vingegaard finishing safely within the main peloton almost 14 minutes down, needing now only to survive Saturday’s mountain stage to Le Markstein before he can begin celebrations on the road into Paris.

For a second day running the Tour passed through territory ideal for a breakaway, but such was the fight to get into it that 60km had been covered before a nine-strong group went away.

After Nils Politt broke his chain, their advantage of a minute quickly tumbled and a counter move of 29 riders came up to join them.

Victor Campenaerts and Simon Clarke tried to go off the front but after Clarke cramped up the group exploded on the final climb still with nearly 30km to the finish.

That gave Mohoric, Asgreen and O’Connor their chance to go clear as they went over the top first, and a powerful chasing group could not close the gap on the straight descent into town.

Mohoric had to wait for confirmation of his win, but as soon as it came the emotions poured out of the Slovenian, who paid tribute to some of the unsung heroes of cycling – the mechanics and carers working behind the scenes – while also remembering his late team-mate Gino Mader.

It was a third stage win of Mohoric’s career, and also a third of this Tour for the Bahrain-Victorious team – another opportunity for them to pay tribute to Mader after his tragic death at the Tour de Suisse last month.

“It means a lot because it’s hard and cruel to be a professional cyclist, you suffer a lot in your preparations, you sacrifice your life, your family and you give everything you can to get here ready,” Mohoric said.

“After a couple of days you realise everyone is so incredibly strong, it’s so hard to follow the wheels some days…sometimes you feel like you don’t belong…

“When Kasper went I knew it was the decisive attack, he was so incredibly strong to win the stage yesterday but he has the will and determination to do it again today.

“I knew I had to do everything perfect, I tried my best for Gino and for the team and in the end you almost feel like you betray (your rivals) because you beat them to the line but it’s just the way professional sport is and everyone wants to win.

“If I want to win I have to follow the wheel of Kasper and then try to beat him in the last 50 metres. I just feel so many things right now.”

Kasper Asgreen outsprinted the chasing peloton to take victory from a breakaway on stage 18 of the Tour de France in Bourg-en-Bresse.

The sprint teams got their sums wrong on the 185km stage from Moutiers as a four-strong break held on by less than 50 metres to take the stage, with Asgreen beating fellow escapees Pascal Eenkhoorn and Jonas Abrahamsen to take his first career Tour stage win.

Jasper Philipsen, hoping to add to his four sprint stage wins in this first opportunity for the quick men in over a week, came home in fourth having failed to make the catch.

There was perhaps some karma in that given the aggressive tactics Philipsen had used earlier in the stage when trying to block Eenkhoorn’s bid to join the breakaway.

The sprint finish to the 185km stage from Moutiers meant no changes at the top of the general classification, in which defending champion Jonas Vingegaard took an all-but-unassailable seven-and-a-half minute lead over Tadej Pogacar on Wednesday.

This slightly lumpy stage offered up the prospect of a breakaway denying the quick men if enough riders could get up the road, although the sprinters who survived the mountains were desperate for their chance, with perhaps only the Champs-Elysees left after this.

But with exhausted legs throughout the peloton after some punishing days in the Alps only three – Asgreen, Abrahamsen and Victor Campernaerts – chanced their arm and were rarely given more than a minute’s advantage.

That short gap allowed Campernaerts’ team-mate Pascal Eenkhoorn to bridge over with 60km to go, despite being forced on to the verge by Philipsen as he tried to get away from the main bunch.

Even as a quartet, the front group appeared to have little chance, but the sprint teams struggled to reel them in on the way into town, and as the road narrowed into a couple of tight technical corners, it became apparent that the scales were tipping in favour of those out in front.

Asgreen then came around Abrahamsen inside the final 100 metres with the chasing Eenkhoorn unable to get on terms.

It was a first stage victory of this Tour for Soudal-QuickStep, a perennial winning machine who had not reached stage 18 without taking a stage for more than a decade, but also a team who lost star sprinter Fabio Jakobsen to injury earlier in the race.

“The situation was not ideal,” Asgreen said. “We’d have preferred to have gone with maybe six or seven (in the break) but also the last week of the Tour coming off some really, really hard days, we’ve seen it before that even a small group can manage to beat the sprint teams so I didn’t rule it out.

“It was a team time trial to the finish. I really couldn’t have done it without Pascal, Victor and Jonas. They all did amazing out there and to be honest we all deserved the win with the work we put in but I’m really happy to come away with it.

“It means so much. With the period I had in the last year since my crash at the Tour de Suisse and having to leave the Tour de France I’ve come a long way. To cap it off with victory like this I really want to dedicate it to all the people who helped me throughout the last year.”