Norwegian skier Kjetil Jansrud won his first Winter Olympics gold medal after triumphing in the men's super-G, while American Bode Miller earned a historic podium place.
Jansrud, a bronze medallist in the downhill a week ago, posted a time of one minute 18.14 seconds to leap to the top of the standings at Rosa Khutor Alpine Center.
His time was 0.3secs quicker than nearest challenger Andrew Weibrecht, with his fellow American Miller and Canadian Jan Hudec sharing bronze with an identical time of 1min 18.67secs.
Jansrus said: ''I'm floating and feeling great. It hasn't sunk in yet.
''It means the world to me. It's the biggest thing you can win. It's something I have worked for since I was a little kid, so I'm just going to enjoy it."
Sweden saw off stiff competition from Russia and France to take gold in the men's 4x10k cross-country relay at the Laura Cross Country and Biathlon Center.
An impressive final run from Sweden's Marcus Hellner secured a first-place finish for his team, who had been dominant throughout.
Russia won the silver medal, finishing 27.3secs behind Sweden. France finished in third to win their first ever medal in this event, while pre-race favourites Norway once more disappointed in fourth.
The men's biathlon 15km mass start, which had been due to take place at the same venue, fell victim to the weather on Sunday night, making the event the first to be called off at the Sochi Games.
Sudden fog descended upon the mountain course, forcing tournament organisers to initially delay the event by one hour to a 2000 start local time (1600GMT).
However, conditions did not improve and it was decided the race would take place on Monday morning, beginning at 1000 (0600GMT).
Eva Samkova of the Czech Republic clinched the gold medal in the women's snowboard cross as American favourite Lindsey Jacobellis crashed out once again.
Jacobellis, who famously blew gold in Turin in 2006 when she fell attempting a stunt on her final jump, slid out of contention after falling when well ahead in her semi-final.
Samkova executed a clear run to ease to victory ahead of World Cup leader Dominique Maltais of Canada, with French teenager Chloe Trespeuch taking bronze.
Jorien ter Mors broke a 12-year-old Olympic record to grab gold in the 1500 metres speed skating final.
The 24-year-old Dutchwoman, who came fourth in Saturday's short track 1,500m final, overcame that disappointment with a time of one minute 53.51 seconds that blitzed the field.
She beat defending champion Ireen Wust into second, who was on course to overhaul her countrywoman early on but eventually posted a time of 1min 54.09secs.
Lotte van Beek made it a clean sweep of medals for the Netherlands, clocking 1:54.54 and pushing compatriot Marrit Leenstra out of the podium places.
The first two runs of the two-man bobsleigh took place on Sunday evening, with Russia 1 leading the way on a combined time of 1:52.82.
That put them 0.32secs ahead of Switzerland 1, while the United States' first crew lay in third.
It was Jamaica who won the popularity contests, however, delighting the crowd despite coming in bottom of the 30-team pile.
The first part of the ice dance figure skating competition was also completed, with USA pairing Meryl Davis and Charlie White poised narrowly ahead of defending champions Tessa Virtue and Scott Moir of Canada following the short programme.