In 1968 Dave Clutchey, a teacher at Centennial CVI established a competitive swim club. Practices were held at Centennial Pool and club direction was managed by the Guelph Parks & Recreation Department. The club grew larger, stronger and gradually volunteer coaches were replaced with paid professionals.With the opening of the Victoria Road Recreation Centre in 1975 the club moved its entire program to the new facility. The City of Guelph relinquished control of the club and the Guelph Marlin Aquatic Club began its history as an independent non-profit swim club.

Forty years later GMAC coaches oversee more than 400 athletes from ages 4 to 70+ training in our swim school program, competitive swim groups, masters group, as well as in our summer only programs of triathlon and competitive lifesaving.