2009-10: Mark MacMillan had a successful 59 game tour of the BCHL greeted the small center, tallying 26 goals and 54 assists with the Alberni Valley Bulldogs.
2010-11: MacMillan concluded his junior career playing for the Penticton Vees (BCHL). He was limited to 40 games, missing time with a broken wrist, and scored 21 goals with 36 assists and amassed 43 PMs. In three playoff games, he had 5 assists with 6 PMs. MacMillan represented Canada West in the World Junior A U-19 Challenge and scored 2 goals with 2 PMs in five games.
2011-12: MacMillan had an excellent freshman season for UND where he played mostly on the top-two lines, scoring seven goals along with 17 assists in 42 NCAA games. The playmaking centerman had a seven-game point streak snapped in the NCAA West Region championship game where the Fighting Sioux lost 5-2 to the University of Minnesota ending their season. He improved his two-way game while gaining valuable experience from all the injuries on the team this season and winning the WCHA Championship against University of Denver.
2012-13: MacMillan skated in all 42 games for North Dakota as a sophomore — the only Fighting Sioux forward to do so. Skating at times with older brother Mitch McMillan, who transferred from St. Cloud State, he scored 13 goals with 12 assists and was +10 with 28 penalty minutes. North Dakota finished third in the WCHA and received an at-large bid to the NCAA West Regional after an overtime loss to Colorado College in the WCHA quarterfinals. The Fighting Sioux defeated Niagara before falling to eventual national champion Yale in the West Regional final.
MacMillan is a skilled two-way forward with good speed and vision along with good playmaking skills. The lanky forward needs to add more muscle mass and size to his thin frame in order to play his physical style. He has a few more years of development at the NCAA level to prepare his overall game for the professional level.
MacMillan will be returning for his senior year at the UND where the versatile centerman will be expected to bring more offensive production and continue his development as a two-way player. He should have a much bigger leadership role on the team this season.