There is a giant obstacle -- the Alps -- in Lance Armstrong's road to victory at the Tour de France.
But judging by his devastating form, this week's peaks may be nothing more than speed bumps as he closes in on a record sixth straight crown in Paris.
After two torrid days in the Pyrenees, where Armstrong, 32, demolished rivals and doubts that he is past his prime, he and other top riders caught their breath Sunday, letting Aitor Gonzalez of Spain take victory in the flat 14th stage.
Monday is a rest day, a last chance to regroup, treat injuries and prepare physically and mentally for three days in the Alps. The races include what promises to be an epic time trial race Wednesday to the L'Alpe d'Huez ski station -- where Armstrong won in 2001.
Mindful of the pain that awaits, he and other contenders did not give chase when Gonzalez and nine other riders -- all so low in the overall standings that they present no threat -- surged ahead on the 119.6-mile swing through southern France from Carcassonne to Nimes.
The stage win was Gonzalez's first in three Tours and the first by a Spanish rider this year. The main pack was way back, pedaling at a relatively leisurely pace, when he crossed the line in Nimes.
Armstrong could take the overall lead as early as Tuesday, on the first 112-mile Alpine stage from Valreas to Villard-de-Lans. Its seven climbs include a 7.5-mile-long ascent of the Col de l'Echarasson. Average gradient: a punishing 7.4 percent.
In two days of climbing in the Pyrenees, Armstrong cut Thomas Voeckler's overall lead from 9 minutes 35 seconds to 22 seconds. While resilient, the 25-year-old French champion should be easy prey for Armstrong in the Alps.
Armstrong, who was 39th, and Voeckler, 40th, finished in the same time -- 14:12 behind Gonzalez -- so Voeckler got to keep his overall leader's yellow jersey.
Italy's Ivan Basso, who was 31st, is the last possible threat at 1:17 behind Armstrong. He was the only rider able to stay with Armstrong in the Pyrenees and could be a force in the race against the clock to L'Alpe d'Huez.
But Armstrong should be able to hold off his challenge in a relatively flat time trial Saturday in Besancon. Basso has worked in a wind tunnel to try to improve his time trial riding, but should not threaten an expert like Armstrong.
"To cast any doubts on his ability would be shameful," said Brian Nygaard, a spokesman for Basso's CSC team, referring to Armstrong. "You see what a class rider he is, how persistent he is, how well he uses his team."
At this point, only a crash, an uncharacteristic and precipitous collapse or a miracle ride by another cyclist would seem to stand in the way of victory No. 6.
"Armstrong and his team are very strong," said Spanish rider Francisco Mancebo, fifth overall, 3:06 behind Armstrong. "Perhaps things will change in the Alps. We'll know as soon as Tuesday. But for the moment, it's hard to beat him."
Jan Ullrich, the 1997 Tour winner, declared defeat after two disappointing days in the Pyrenees. The German is 6:39 behind Armstrong overall -- all but out of contention for the title.
The first 60 miles of Sunday's stage were quick and tiring on legs already aching from the grueling Pyrenees and two weeks of racing before them.
So when Gonzalez and nine others, none higher than 43rd in the overall standings, raced into the distance, the main pack of cyclists eased up, already looking forward to putting their feet up on Monday.
"It was a relief when they went away," Voeckler said.
"We started to unwind," added French rider Richard Virenque. "Some of the boys are exhausted."
Gonzalez, winner of the 2002 Tour of Spain, escaped on his own with just over three miles left. Others in his group couldn't organize an effective chase.
"I felt the ideal moment to attack and I gave everything I had," said the 29-year-old, who has never completed a Tour and is 24:34 behind Armstrong overall.