A native of Akron, Ohio, Mark attended the University of Kentucky where he swam and stayed on as an assistant coach after graduation. He later returned to Ohio where he coached Cuyahoga Falls High School and Waterwork Swim Club. 

A year later he made a bold move when he packed and moved to Southern California and took over a local rec team, the Mission Viejo Nadadores. In short order, they developed into a powerhouse winning 44 National Team Championships over the next thirteen years. 

Schubert then moved to Boca Raton, Florida to coach the newly created Mission Bay Makos. Here his teams won another 10 National Team Championships. The challenge of coaching college called and he went on to win NCAA’s team championships at the University of Texas and later at the University of Southern California. 

Over the years Mark has helped to develop numerous Olympians and world record holders (including Olympic gold medalists Brian Goodell, Shirley Babashoff, Janet Evans, Lenny Krayzelburg, Ous Mellouli, and Dara Torres to name a few). This resulted in his being named to eight USA Olympic Coaching Staffs. Because of his success and business acumen, he was asked to serve as USA Swimming’s National Team Director and Coach. 

He later went back into club coaching -- first at Golden West Swim Club, before returning to the Mission Viejo Nadadores, and a pro team that qualified 2 swimmers for the 2024 Paris Olympics. He recently moved to Hawaii to coach the American Renaissance Academy and the Podium Swim Club in Oahu.