Kalla cruised to her third Olympic gold medal in the women's skiathlon on the first official day of competition, beating Marit Bjørgen (NOR), the most decorated female Winter Olympian of all time, followed by Krista Parmakoski (FIN). It was her 11th medal - six gold, four silver and a bronze. The Dutch team is aiming for 15 medals in Pyeongchang.
On the 23rd winter Olympic games in Pyeongchang awarded the first medal.
And the victor of the PyeongChang Winter Olympics' first gold medal is.
"I am very happy to take a medal in my last Olympics and still to be there", Bjørgen said.
Meanwhile, Germany's Laura Dahlmeier, 24, won her first gold medal in biathlon, taking the women's 7.5km sprint, ahead of Norway's Marte Olsbu in second place and Veronika Vitkova from the Czech Republic in third.
In speed skating, the racer to watch is Dutchwoman Ireen Wust, hoping to repeat her victories in 2006 and 2014 with a win in the women's 3000m.
But while the 37-year-old Bjoergen, who won three gold medals at the 2010 Vancouver Games and three more in Sochi, proved she's still a dominant figure in the sport, she admitted there is a noticeable changing of the guard happening.
In one of the most physically testing events in the Olympics, Kalla broke away from the pack after about 34 minutes. "I am happy to be here at my age".
In ski jumping, Poland's Kamil Stoch was second in men's normal hill qualification and goes into Saturday's final with a strong chance of claiming gold, to add to his two from Sochi in 2014.