He served as the head track coach at The College of the Holy Cross in Worcester, Massachusetts, from 1912 to 1964.
[3] In 1901, Sullivan won the New England Amateur Athletic Union's half mile championship.
[2] Sullivan developed a number of track champions, including Joe Tierney, Leo Larrivee, and Walter Mulvihill.
[10] In 1963, Sullivan, at the age of 81, led Holy Cross to the New England intercollegiate indoor championships.
[11] He retired the following year and was replaced by Tom Duffy, head coach at Rindge Technical School, a former Holy Cross runner under Sullivan, and the trainer of John Thomas.