AP photo by Thibault Camus / Alexander Kristoff, left, sprints to the finish line to win the first stage of the Tour de France on Saturday in Nice.

NICE, France — Delayed but alive again and out on French roads, the strangest Tour de France ever set off Saturday in a bubble of COVID-19 protocols to try to keep the 176 riders free of the coronavirus for three weeks of racing through the country's worsening epidemic.

Only after riders peeled off their face masks and pedaled off from the start in the Mediterranean city of Nice, serenaded by a uniformed band playing "La Marseillaise," did the Tour begin to look like its old self, immediately delivering thrills and spills as storms made the roads as slippy as ice.

However, with fans kept firmly at arm's length, told by the government that it was best to stay home and watch the racing on television, the Tour lost much of its festive atmosphere. There was very little of the usual up-close communing between athletes and their adoring public that made the venerable 117-year-old rolling roadshow unique among sports events in more carefree times.

Powering past thin crowds on the finishing straight in Nice that would usually have been crammed with spectators rows deep, Norwegian rider Alexander Kristoff won the first stage with a fearsome final sprint. He celebrated by giving a fist bump, not a hug, to a teammate.

Winning the opening stage earned Kristoff the first yellow jersey of the 2020 Tour, which he will wear as the race's overall leader for Sunday's second stage, which loops into the mountains behind Nice. Usually, a race official or a VIP would have helped him slip into the iconic jersey, one of the most coveted and recognizable in sports. But not this year, with social distancing the priority.

Kristoff stood alone on the winner's podium, flanked by a host and a hostess a safe distance away. He then disappeared backstage to wriggle into the jersey by himself before coming back out to pose for photos. Still, the thrill of wearing yellow for the first time in his eight Tours more than outweighed the weirdness.

"An amazing feeling," he told reporters at the finish. "It means a lot for my career, and a stage win shows I can still be up there even at 33 years old and with four kids."

With infections rising steadily across France, the Tour has no guarantees of reaching the finish in Paris on Sept. 20. Riders will have daily health checks and coronavirus tests during the race, and they can be tossed out if they fail them. Entire teams could be sent home if two or more riders or staff test positive for COVID-19 within a week. Fans have been told not to approach riders for selfies or autographs and to always wear masks.

Jean-Michel Blanquer, the French minister in charge of sports, was upbeat at the start Saturday, saying the Tour has only a "very slim" chance of being canceled before Paris but also cautioning that "everything is possible."

"That type of thing could happen, but of course I hope that it won't, and I think that it won't because the Tour organizers have done an extraordinary job," he said.

Crowd control and social distancing sucked much of the usual boisterous joy out of the Tour's first day. An eerie silence and a thin crowd kept well away across an empty square greeted riders as they paraded on stage at the start. Even a stone statue that overlooked the strange scene wore a mask, marked "protect ourselves."

Still, roadside fans were grateful for the spectacle, after gruesome months of mounting deaths in France — now at 30,600 — and lives turned upside down by the virus. The European soccer championships and the Olympic Games were postponed to 2021, and scores of other events have been canceled. But the Tour, delayed from July, survived and is becoming a gauge of the feasibility of continuing to hold sporting mega-events during the pandemic.

The sight of the peloton zooming past the corner that he chose by Nice's port caused 32-year-old tennis teacher Benjamin Sand to beam, thrilled by the riders' speed through the bend.

"We're so lucky," he said. "It's such a breath of fresh air."

Fans were also rewarded with high drama during the 97-mile first stage that did three loops around Nice and hilly backcountry to the city's north. Rain storms turned the tarmac so slick that riders eventually made a pact between themselves out on the road to dial back the pace after multiple crashes.

Among the most dramatic was Colombian rider Miguel Angel Lopez skidding headfirst into a road sign. He labored on to the finish. Another crash took out a heap of riders in the dash to the line on Nice's splendid seafront. The 2019 Tour champion, Egan Bernal, suffered the blow of having two of his support riders on the Ineos team involved in painful pileups.

"People were crashing almost on every corner," Kristoff said. "It was really slippery out there."