Amid a crowd of thousands of flag-waving Norwegian fans, Jansrud finished 0.02 seconds ahead of Svindal in the men's downhill. Vincent Kriechmayr of Austria came third, 0.33 behind. Svindal, the two-time Olympic champion and five-time world champion, announced last month that he would retire after this race.
Jansrud was racing with a broken left hand following a fall in training in Kitzbuehel, Austria, 2 1/2 weeks ago. Already an Olympic champion in super-G at the 2014 Sochi Olympics, this is Jansrud's first world title.
Results were not official yet as lower-ranked skiers were still coming down the course.
Aksel Lund Svindal has come down in second place behind Norwegian teammate Kjetil Jansrud after the final run of his career.
Svindal was the eighth skier on course and will have to wait until the rest of the top-ranked racers come down to see his final result.
The men's downhill has started after an hour's delay due to fog.
Adrien Theaux of France was the first skier on course amid heavy snowfall.
Visibility still looked poor on the upper portion of the course and lights were turned on along the lower section.
Aksel Lund Svindal will have to wait even longer for the final race of his career.
The start of the men's downhill has been delayed by another half hour — until 1:30 p.m. (1230 GMT) — due to fog.
It is snowing heavily at the Swedish resort of Are.
The start of the men's downhill has been delayed by a half hour until 1 p.m. (1200 GMT) due to fog.
About 10 centimeters (four inches) of snow fell on the course overnight and organizers were still clearing the course. Strong winds are also a factor.
The race is due to begin on a shortened course from the super-G start.
Norwegian great Aksel Lund Svindal bids skiing goodbye in the downhill at the world championships on Saturday.
Norwegian fans, including Crown Prince Haakon and Crown Princess Mette-Marit, are traveling over the border to see Svindal race for the last time before he retires.
The two-time Olympic champion and five-time world champion is attempting to become the first man to win the downhill world title three times, following his gold medals in Are in 2007 and in Schladming, Austria, in 2013.
The race is scheduled to start at 12:30 p.m. (1130 GMT) on a shortened course due to overnight snowfall.
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