Keska competed collegiately for University of Oregon from 1992 to 1996, where he was an All-American (10,000 m) and three time PAC-10 Conference Champion (10,000 m in 1995, 1996, cross-country in 1995).
Keska represented the University of Oregon from 1992 to 1996, earning All-American honors in the 10,000 meters and claiming three consecutive PAC-10 titles in both the event and cross-country.