France's Justine Braisaz-Bouchet had built up such a commanding lead in the women's 12.5km mass start that she was able to grab a French flag and wave it as she crossed the finish line in a time of 40:18.0, 15.3 seconds ahead of her closest competitor.
But it wasn't a straightforward race, having to mount a huge comeback to claim gold.
After the second shooting station 5km into the race, Braisaz-Bouchet was way down in 14th position, a minute and 14 seconds behind the leader after two misses in the opening prone shoot.
Before the final shooting station 7.4km into the race, Braisaz-Bouchet was in seventh, over a minute behind leader Marte Olsbu Røiseland of Norway.
However, after poor visits to the two standing shoots by both Røiseland and compatriot Tiril Eckhoff — both women missed two shots in each of their last two range visits — Braisaz-Bouchet surged into the lead.
And the 25-year-old Frenchwoman accrued a lead of over half a minute with about a kilometer to go, so was able to enjoy the final straight as she claimed her first Olympic gold medal, having won bronze in the women's 4×6 km relay at PyeongChang 2018.
Braisaz-Bouchet attempted to put her emotions into words after the race and said focusing on herself was her only plan.
"I was so shocked I had won. I'm really happy to say that I'm Olympic champion," she said. "It's quite amazing. It's a really big feeling and I want to thank my family, my husband, especially for him. A big thank you to all the team and the people who support."
She added: "Today, I was just really calm and happy, even during the race. I really wanted to take part in this race and felt really, really calm during the race. I didn't think about results or anything or the girls around me. I was just racing my own biathlon and in the moment."
Eckhoff and Røiseland won silver and bronze — Røiseland's fifth medal of the Games.