She is a multiple-time NCAA Division II Track and Field Championships winner and competed at the 2016 United States Olympic trials.

She earned Massachusetts Interscholastic Athletic Association all-state status, but did not win any state championship titles.

[5] She followed that up by winning the outdoor DII championships, attributing her improvement to coaching, lifting weights, eating better, and having more confidence.

[2][6] As a consolation, she was selected to represent the U.S. at the 2016 NACAC U23 Championships in Athletics where she won the gold medal in the women's 4 × 400 m relay.

[2] In her last professional race at the 2018 USA Outdoor Track and Field Championships, Muscaro ran 2:08 in the 800 m first round and failed to advance.