A month later, Shiffrin took the slalom bronze medal at the FIS Junior World Ski Championships held at Crans-Montana, Switzerland (after having been down with a stomach virus the day before).

[21] In January 2015, Shiffrin named Croatian former ski racer Janica Kostelić and American Bode Miller as her idols while growing up.

Shiffrin made her World Cup debut on March 11, 2011, in giant slalom at Špindlerův Mlýn in the Czech Republic.

[3] Though she spent most of her last two years of high school in Europe on the World Cup circuit, she graduated on time from Burke Mountain Academy in June.

She won the next event, a slalom at Levi, Finland, improving on her podium finish the previous year for her fifth World Cup victory.

[51] On January 29 in Cortina d'Ampezzo, Italy, Shiffrin posted her best result in a speed event, finishing fourth in the super-G, only 0.03 seconds off the podium.

[citation needed] Between December 19 and January 9, Shiffrin won 8 of the 9 races on the World Cup circuit (4 SL, 2 GS, and 2 PSL).

She then won the slalom in Flachau, Austria to equal Annemarie Moser-Pröll's record of 41 World Cup wins before her 23rd birthday.

However, due to having the 3rd fastest slalom run—and many of the leaders of the first run having mistakes in the second—she was able to move up to the silver medal position behind Michelle Gisin of Switzerland.

[citation needed] Shiffrin secured her second consecutive World Cup overall title on March 9, 2018, with 5 races left in the season.

At the World Cup Finals in Åre, Sweden, she won the slalom by 1.58 seconds over Wendy Holdener of Switzerland, her 12th win of the season.

This tied her for second with her teammate Lindsey Vonn for most World Cup wins in a single season by a woman, behind Swiss skier Vreni Schneider holding the record of 14.

Tina Maze and Lindsey Vonn never won a parallel slalom race since its introduction into the World Cup competition.

She joined Lindsey Vonn, Tina Maze, Janica Kostelić, Anja Pärson, Pernilla Wiberg, and Petra Kronberger.

On December 22, 2018, she won the slalom in Courchevel, France, and became the youngest skier, female or male, to win 50 World Cup ski races at 23 years and nine months.

With that race, she also equaled the record of the Austrian Marlies Schild for the most wins in women's slalom – 35,[61] and put herself in joint seventh place in all-time World Cup victories with Alberto Tomba of Italy.

[63] At the World Championships, Shiffrin won the gold medal in the super-G[64] before taking a bronze in the giant slalom in windy, changeable conditions, finishing behind Vlhová and Viktoria Rebensburg.

[65] She went on to secure a second gold in the slalom, becoming the first alpine skier to win four consecutive World Championships in the same discipline, despite suffering from a lung infection on the day of the race.

[68] At the World Cup finals in Soldeu, Shiffrin started her campaign by clinching the super-G crystal globe, finishing fourth in the final race to take her tenth World Cup title and her first in a speed discipline, having already built an unassailable lead to secure the overall and slalom titles earlier in the season.

She became the first skier to win World Cups in a technical and a speed event in the same season since Tina Maze six years earlier.

However, on February 2, 2020, her father unexpectedly died in an accident,[73] causing her to take an indefinite break from the World Cup tour and her chances of a fourth consecutive title.

Austrian Katharina Liensberger moved up to third with only a .09 second deficit, making it the closest contested giant slalom in world championship history.

[87] On November 30, 2024, at the FIS World Cup race in Killington, Vermont, Shiffrin sustained a puncture wound to her right abdomen following a crash in the giant, where she tumbled in two gates and hit the fence.

Regardless of gender, Shiffrin is the only athlete to have won 15 races in the same calendar year, winning the last slalom of the 2018 season in Semmering and surpassing Marcel Hirscher.

Shiffrin remains in pursuit of her record breaking 100th World Cup victory accolade, securing 10th place in the slalom race at Courchevel on January 30 2025.

Hosted by Meredith Vieira, it chronicled the journeys of seven American Olympians and featured interviews from parents and coaches along with home videos and photos from each athlete's childhood.

[101] After Shiffrin's first gold medal win, she played "Catch Phrase" with Reese Witherspoon and Usher on The Tonight Show Starring Jimmy Fallon.

[104] On October 27, 2016, Shiffrin, speaking in German, presented the award for the best Austrian sportsman to Marcel Hirscher at a sports gala in Austria.

[108] In the weeks after the February 2019 World Ski Championship, Amanda Ruggeri twice profiled Shiffrin in Deadspin,[109][110] and she was featured in The Wall Street Journal.

[111] In March 2019, after the conclusion of her record-setting World Cup season, she discussed handling anxiety on NBC's Today,[112] addressed dealing with social media trolls on CNN,[113] discussed pay equity on ABC's Good Morning America[114] and the entertainment news show Access,[115] and taught host Jimmy Fallon how to do the shuffle dance on NBC's Tonight Show.