Wust also became the first speed skater in Olympic history to win 10 medals, eclipsing equestrian great Anky van Grunsven to become the most decorated Dutch Olympian.
"I feel really happy and I still cannot believe it," Wust said. "For me it's incredible. Now I have achieved the dream."
Wust became the first Dutch Olympian to win five gold medals, breaking the career mark she had shared with 1948 four-time champion sprinter Blankers-Koen, swimmer Inge De Bruijn, cyclist Leontien van Moorsel and equestrian rider Charles Pahud de Mortanges.
"I don't have any words for it, actually," Wust said.
"The bigger the race, the more important, the more I can get something out of my body," Wust said. "I'm more excited for big races. It's not that I'm afraid for it. I just love it."
Wust moved one shy of 1960s Soviet Union skater Lidia Skoblikova's all-time women's speed skating record of six golds, just two days after fading on the last lap and settling for second at 3,000m by 0.08secs.
- 'Gold is the only one for me' -
"The tension was really high," Wust said. "Saturday I was disappointed. Silver is really good but gold is the only one for me."
This time, she was on lead pace again but charged to the finish, stretching her margin to the line to grab the top spot by more than a second, but with six racers remaining.
Leenstra edged European champion Lotte van Beek for third by 0.01secs but neither caught Wust ahead of the dramatic final pairing -- Takagi, the world's top-rated 1,500m skater, and world record-holder and world champion Heather Bergsma of the United States.
"I wasn't watching," Wust said. "I could only look at the ground. I kept hearing it was close. It was exciting. Only the last straight I dared to watch."
Takagi threatened to become the first Japanese woman to win an Olympic speed skating title and claim only the third gold by any Japanese woman, but she could not eclipse Wust's pace.
"I'm happy to have second place but I really wanted a gold medal," Takagi said. "So it was a little bit frustrating for me.
"Four years ago I wasn't able to be at the Olympics, so I worked hard to be here and to get a silver medal, I'm very happy to have one."
That left only the podium ceremony, in which Wust leaped onto the top step and thrust her fists high into the air. She was wiping away tears before she descended.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)