Kory earned ten varsity letters in cross country (4), basketball (3), and track and field (3). He was an All-Conference cross country athlete in 1987.  In basketball, he was a starter and significant contributor.  In track and field, he was the 1988 ND State Champion in the 800m and 4x800m and also helped lead the Riders to a State Runner-Up finish as a team that season. His performances in the middle distance events have stood the test of time, ranking with the best ever at RRHS. Following high school, Zimney competed at the University of North Dakota and was a North Central Conference Champion in the 800m and a Drake Relays 4x800M champion (1992).