In 1968 after graduating from Prairie Bible Institute Winston Thurton served as Assistant Dean of Men. He was pastor at Grace Memorial Church from 1975-1987. He then served at the Markham Missionary Church until 2001. He served in several positions while in the Greater Toronto Area. Winston was chairman of the Toronto Spiritual Life Convention and member of the Evangelical Fellowship of Canada. In the summer of 2003 Winston moved to Oregon to begin his own speaking ministry.