Clark Parkinson began skiing in 1945 at Snow Basin, Utah. His first job as a young boy was at Little Mountain ski area working as a lift operator in exchange for free ski passes. As teenagers, he and his brother Dave learned how to ski at Alta and Brighton, Utah. They both went on to teach skiing in the Alf Engen Deseret News Ski School.
After graduating from the University of Utah in 1962, Clark joined the ski school as a weekend instructor at the newly opened Treasure Mountain ski area in Park City, Utah. He served as Ski School Supervisor for the resort's weekend mass ski school programs for 25 years and continued on the staff for over 47 years. He remains the longest tenured employee of the Park City Mountain Resort.
In 1965, he obtained his Associate certification in the Intermountain Ski Instructors Association and his full certification in 1966. He was appointed Secretary and established the office of Executive Secretary for the association in 1967. He was elected to the Board of Directors in 1968, served on the Executive and Certification committees in 1969 and served as President in 1970-71.
Clark was awarded Lifetime membership status by PSIA-I in 1979 for his "contribution to ski teaching." In 1989, he established the PSIA-I Hall of Fame and has served as Chairman since its inception. He is a charter member of the Veterans Ski Instructors Alliance board of directors and was honored in 2007 for his "dedication to the sport of skiing."
He is a charter member of the University of Utah Marriott Library Ski Archives Advisory Board. He received the Sue Ramer Memorial Award for "outstanding volunteer service" from the Ski Archives in 2001 and their History Maker Award for his "outstanding accomplishments as a ski instructor" in 2003.