Mike Bellefontaine played minor football in the GSL, North Vancouver, and attended Handsworth Secondary where he was an outstanding receiver and kicker. He was voted to the Handsworth All Time Team as a wide receiver. He helped Handsworth win the provincial AA championship in 1979. After playing junior for the Meralomas and then at Wenatchee Jr. College, Bellefontaine would join the University of British Columbia in 1985 and go on to a record-setting career while winning a Vanier Cup in 1986. He was inducted into the UBC Football Wall of Honour in 2019 and named to the 1980s All-Deacde Team. He would go on to play one season with the BC Lions in 1989 as a receiver.
Bellefontaine amassed a significant number of achievements during his time with UBC, in particular. In addition to winning the Vanier Cup in 1986, he:
- Was a Western Bowl Champion in 1987;
- Shrum Bowl MVP in 1987;
- Led the Canada West (CW) in twice in scoring with 175 points (1987, 1988);
- Led the Canadian Intercollegiate Athletic Union (CIAU) in points (1987);
- Led the CW in converts (23) and field goals (18) in 1987;
- Led UBC in punting yards (2,959), receptions (33), and receiving yards (485) in 1985;
- Set 11 school records including most receptions in a game (11), most points in a game (24), most field goals in a game (5, twice), most punting yards in a career (11,090) and most field goals made in a season (28 in 1987);
- Was a CW All-Star Receiver in 1988;
- Finished his T-Birds career with 101 receptions, 1,488 receiving yards and six touchdowns;
- Was named to UBC's Top-100 careers in 2016;
- Was named to the 1980s All-Decade team in 2020.