The decathlon is a two-day competition of ten events, each event awarded points based on performance. The purpose of this study is to compare sub-national class decathlon scores and event performances with national and elite class decathlon performances and scores. The 2002 United States all-time decathlon performances and the 2002 world all-time decathlon performances were separated into elite, national or sub-national classes according to total points scored. Event performances, event scores, and total scores were then compared. Results indicated that the sub-national class decathletes on average scored less points in every event, showed more variability in performance, had weaker correlations between events and total score, and required more events to predict final score than national and elite decathletes.