[5] At age 22, he remained the competition's youngest male winner for many years, eventually being topped by a 20-year-old Eritrean, Ghirmay Ghebreslassie, in 2016.

[6] He returned to win the Washington's Birthday Marathon in 1974 in 2:26:27, and also won the Hunter's Woods Elementary School 20-miler that year.

[1] Following his retirement from the sport, he lived in Livingston, New Jersey, with his wife, Donna.

[7] He died of a heart condition at age 49 following poor health.

[8] The Washington Running Club, of which Karlin was a founder member, named its club competition trophy the Sheldon Karlin Cup in his honour.