McFadden, who has been a Paralympic skier for about a year after a successful career as a wheelchair racer in the Summer Paralympics and the world’s biggest marathons, finished second behind Norway’s Mariann Marthinsen.
“I can’t even believe it. My main goal was just to come in and make it to the final,” McFadden said in a release from the U.S. Paralympic team. “I am just so happy and so proud.”
McFadden, born with spina bifida in St. Petersburg, Russia, and who lived in an orphanage, was adopted by Deborah McFadden at age 6 and brought to the United States.
As a student at Atholton, she won a lawsuit that enabled disabled prep athletes to compete against those without disabilities.
In her first race in Sochi earlier in the week, McFadden finished fifth in the 12.5-kilometer sit race.
McFadden's final individual Paralympics race is to be Sunday’s 5-kilometers.
The Chicago Tribune contributed to this story.