Larmoyeux received Bolles' Outstanding Athlete Award in 2005 after serving as the captain of the swim team. Larmoyeux was a High School All-American in the 100 breaststroke and the 200 IM. He also was the state champ in the 100 breaststroke and was the runner-up in the 200 IM. Larmoyeux was a Senior National Qualifier in the 200 breaststroke and is a five-time U.S. Open qualifier (100 and 200 breast, 200 and 400 IM, and 200 butterfly).
Larmoyeux is the son of Mikey and Ellen Larmoyeux. His father swam collegiately at Florida.