It will be remembered as one of the great moments in Olympic history.
It came after last week's shock super-G win for Ledecka, daughter of a Czech rock star and composer, who has stunned ski purists and confounded logic by taking gold in two very different events.
"It's her desire to do something completely special", said Justin Reiter, a former Olympic snowboarder who met Ledecka when she began training at the Steamboat Springs Winter Sports Club in Colorado.
Iivo Niskanen won Finland's first gold medal in Pyeongchang in the men's 50km cross-country skiing, while Lee Seung-hoon delighted home fans with victory in the inaugural men's mass start speed skating.
Ester Ledecka of the Czech Republic keeps making history at the Pyeongchang Olympics.
"It was so nice", an ecstatic Ledecka said after claiming gold at the podium, via the official website of the 2018 Winter Olympics. Ledecka came into that event having started in only 19 World Cup skiing races in her entire career.
The super-G win -transformed Ledecka into the unexpected story of the Games.
"But it is a great thing that I could be here in both sports and enjoy a career in both sports", she said. In a world where athletes focus on their discipline with religious fervour, she has the gift to remain world class while dividing her attention.
This was no miracle on snow, a la her.01-second victory in the super-G that left her stone-faced and unbelieving at the bottom of the hill, wondering if there had been some kind of mistake. "You know, on every race, I'm trying to do my best and I'm trying to ride every race the same - with 100%".
Even back in October the American feared that by focusing on both sports his pupil would dilute her chances of snowboarding success in South Korea. However today, I was just standing there and suddenly the snowboard girl comes in.
In a sport often decided by micro-fractions, Ledecka won one race when her opponent skidded off the course, and the others by margins of 0.97 seconds, 0.71 seconds and, in the final, by 0.46 seconds.
"We did the best that we could to try to shelter her from you guys picking her bones clean".
"I'm really looking forward to get to Europe for different cooking because it's been quite a long time here".
Ledecka's double medal swoop has earned her the nickname of "Queen of the Games". She made it look that way with a wire-to-wire exhibition of tight carving, ideal lines and pure domination.