Diggins and Randall join Bill Koch among American cross-country skiers that have won Olympic medals.
"It's a dream come true for her and a dream come true for the USA cross-country skiing team", Diggins's mother Deb told Reuters. In the final team event of the Olympics, the US women on Wednesday grabbed a gold medal.
There's also snowboarding. Pushed forward a day because of predicted bad weather, the first finals of Olympic snowboarding will start with the women at 7:30 p.m. with the last run is scheduled for 8:30 p.m.
Discussing her strategy, Diggins said that she wanted to push the pace early, to try to take some energy from the sprinters she was up against.
Bjoergen won her 14th medal at the Winter Games by taking bronze with her Norwegian teammates on Wednesday in the team sprint.More news: Centurion T20I: Indian eves elect to field first against Proteas
Diggins, 26, had an incredibly strong push in the last lap and came from behind to win.
A 42-year drought was over, and they wanted to share their joy with everyone. "That feeling of being able to cross the line and having Kikkan tackle me was the coolest thing ever", she added. She is also one of the first women to compete in five Olympics, along with Kelly Clark, who is also in Pyeongchang.
The 35-year-old was given a place in the relay team ahead of younger prospects, and she used all her experience to keep cool under pressure.
The U.S. hasn't won gold since the debut of the sport 20 years ago.