Joergen Graabak broke away from a five-man group with about 100 metres left in the cross-country race to give Norway a one-two finish in the Nordic combined large hill event at the Sochi Olympics.
In steady rain, Graabak finished six-tenths of a second ahead of silver medallist Magnus Moan. Fabian Riessle of Germany was 1.6 seconds behind and took the bronze.
Normal hill gold medal winner Eric Frenzel of Germany was an uncertain starter due to a virus, but led after the ski jumping. He faded badly, however, in the 10km cross-country ski race to finish 10th.
Graabak finished sixth in the ski jumping portion and started 42 seconds after Frenzel, but quickly made up the deficit with the German unable to hold his lead for long.
"It's pretty obvious how I feel," the 22-year-old Norwegian said.
"It's a bit surreal. I will need time to enjoy the moment. My tactic was to ski well and hopefully to stay with the top guys."
He finished in a time of 23 minutes, 27.5 seconds on the course adjacent to the hill complex at the RusSki Gorki Jumping Centre.
Akito Watabe of Japan, who won silver behind Frenzel in the normal hill, was sixth, followed by Jason Lamy Chappuis of France, the normal hill gold medal winner from Vancouver in 2010. Lamy Chappuis was among a 10-man pack that alternated the lead for much of the race.
"It was a hard race and difficult to keep a good position," said Watabe.
"I fell down on the corner of the downhill. And after that it was hard to catch a groove again. Rain is always too difficult to ski with, but it was the same for everyone."
Lamy Chappuis said he struggled physically during the race.
"I have nothing to regret," the Frenchman said.
"I was in the leading group ... my thighs are burning. On some days you have the feeling that nothing can happen to you, but on other days it's not the same story."
Germany might have had another man on the podium but Johannes Rydzek fell on the final turn after appearing to hit the back of Graabak's skis. He finished eighth.
Six seconds after Rydzek, Frenzel, the runaway leader in the World Cup standings this season with seven wins, crossed the line.
Without the virus, he likely would have threatened for another gold.
