Larson first qualified to junior international elite in July 2006 at the U.S. Classic, where she finished fifth all-around.

She then competed at the Junior Pan American Championships, her first international assignment, where she won gold in the all-around and on floor.

She was also named to the Grand Prix Team in Italy but was unable to compete due to a foot injury.

During the Friendship International Exchange, she placed 4th all-around and won silver on floor behind teammate Alicia Sacramone.

Larson opened her 2009 season at the Gymnix World Cup and earned gold medals on beam and floor.

[1] A month later, she won three medals at the 2010 U.S. National Championships: gold on floor, silver in the all-around, and bronze on uneven bars.

[3] Larson was a victim of former USA Gymnastics national team doctor Larry Nassar and gave a victim impact statement against him after his conviction and before his sentencing for the sexual abuse of young female athletes.