Jaqueline Mourão was 34 years old at the time of these Games, and was making her fourth Olympic appearance. She had previously participated in the 2004 and 2008 Summer Olympics in the sport of cycling, and the 2006 Winter Olympics as a cross-country skier. In Vancouver, she took part in the 10 kilometre freestyle on 15 February. She finished the race in a time of 30 minutes and 22.2 seconds. This put her in 66th place out of 77 athletes who finished the race. Like her teammate Ribela, she would also go on to represent Brazil four years later, this time expanding her efforts to both biathlon and cross-country skiing.