MARSEILLE, France — Chris Froome stands on the doorstep of the Tour de France’s greatest champions.

Sewing up his fourth Tour crown with a cool-as-a-cucumber ride in a high-pressure time trial in heat-baked Marseille on Saturday means he’ll need just one more victory to join the record-holders who have five.

His winning margin in this Tour, 54 seconds over Rigoberto Uran of Colombia going into Sunday’s processional final stage, is narrower than Froome’s previous wins in 2013, 2015 and 2016. It’s the first he has won by less than one minute.

Over the three weeks, Froome executed fewer of his usual devastating accelerations in the high mountains. He ran out of gas and temporarily lost the race lead on a super-steep climb in the Pyrenees. He hasn’t won any of the 20 stages heading into the final stage, which is traditionally a peaceful ride into Paris with only the sprinters dashing for the line at the end, for the bragging right of winning the stage on the Champs-Elysees.

But Froome at 90 or 95 percent of his previous best still proved good enough – certainly enough to start dreaming of win No. 5 and joining the exalted company of Jacques Anquetil, Eddy Merckx, Bernard Hinault and Miguel Indurain. They have been the joint leaders since Lance Armstrong’s string of seven doping-assisted victories was expunged from the history of the 114-year-old race.

“It’s a huge honor just to be mentioned in the same sentence as the greats,” Froome said. “I have got a new-found appreciation for just how difficult it is for those guys to have won five Tour de France. It certainly isn’t getting easier each year.”

Yet he made the deciding time trial look easy enough. To boos and whistles from the partisan crowd backing Romain Bardet, the French rider who was only 23 seconds behind him in the overall standings, Froome set off last from the Stade Velodrome football stadium. Bardet set off two minutes ahead of him.

Froome rode so strongly that by the end he had Bardet in his sights. The French rider wilted on the twisting, tricky course with long wind-affected straightaways by the sea and a short sharp uphill to Notre-Dame de la Garde cathedral, the dominant landmark in France’s second-largest city.

The suspense was quickly over. By the first time check, after 10 kilometers, Froome was 43 seconds quicker than Bardet. The only question was whether Bardet would save a place for himself on the podium as a top-three finisher. He did, by one second.

The time trial was won by Polish rider Maciej Bodnar, who covered the distance at an average speed of nearly 30 mph.