2010-11: Dylan Larkin played for the national champion Belle Tire bantam AAA team in Michigan. He scored 23 goals with 24 assists and had 41 penalty minutes in 30 regular season games. Larkin was one of six Belle Tire players to participate in USA Hockey's Select 15 Development Camp.
2011-12: Larkin was named team captain for Belle Tire's U16 team; skating in 27 games before suffering an ankle injury in November that kept him out the rest of the season. He scored 18 goals with 18 assists and 24 penalty minutes. Larkin committed to playing college hockey at the University of Michigan in 2014-15 and was selected for the USA National Team Development Program in Ann Arbor. He was picked by Erie in the 10th round (184th overall) of the 2012 OHL Priority Draft.
2012-13: Larkin skated for USA Hockey's U17 team in his first season with the NTDP in Ann Arbor. In 55 games he scored 13 goals with 14 assists and had 54 penalty minutes. He had 1 goal with 1 assist in four games as the USA finished first in the 2012 Four Nations Tournament in Switzerland. The USA finished third in the 2013 U17 World Hockey Challenge with Larkin scoring 2 goals with 5 assists in six games. Larkin had 3 goals in four games for the third-place USA squad at the 2013 U17 Five Nations Tournament in Finland. Larkin was a fourth round selection (132nd overall) of Vityaz Podolsk in the 2013 KHL Draft.
2013-14: Dylan Larkin returned to skate for the NTDP's U18 team in his second season in Ann Arbor and was selected to participate in the 2013 CCM/USA Hockey All-American Prospects Game in September, 2013.