 In 1966, Moran became the first lacrosse coach at Elmont Memorial High School and promptly posted a 29-3 record and won two league championships in two seasons.He was also the head coach of the Long Island Athletic Club from 1966–1968, leading the team to a 31-4 record and capturing the 1968 club championship, the first-ever United States Club Lacrosse Association (USCLA) club title won by a northern team.In 1969, he succeeded the legendary Ned Harkness as the head men's lacrosse coach at Cornell University and went on to lead the Big Red for 29 seasons, winning three national championships (1971, 1976, 1977).