When in college she developed a passion for playing camogie, an Irish variation of lacrosse, and made it to the Irish national team. She later received an academic scholarship to Gurteen Agriculture College and was the first young woman from her county to earn a scholarship to study farm management. During her studies, she faced resistance and discrimination from her male peers and some superiors because so few women were in the field.
She moved to the United States in the 1980s after giving birth to her son. She has two children. Her daughter was born in the US. When Treasa first migrated she worked as a maid before attending night school for nursing.
Her husband is Tommy Smyth, an ESPN-TV soccer analyst; they enjoyed a 12 year courtship before getting married. Treasa Goodwin Smyth currently hosts a weekly radio show called Ireland Calls on WVOX 1460 AM, in which she interviews Irish personalities from around the world. In 2008, when her husband was Grand Marshal of the New York City Saint Patrick’s Day Parade, she took his place in the broadcast booth to announce the parade for WNBC-TV.