The purpose of this study was to investigate the effects of a running club on the mile run times of fourth grade students. The study was conducted in a suburban elementary school setting in central Connecticut with a student body of 400. The participants for the study included 59 fourth grade students, 30 of whom were boys and 29 of whom were girls. All of the students had 20 minutes of daily recess and 40 minutes of physical education once every four school days, per the school schedule. Over the course of the 6-week study, all participants had eight physical education lessons in which they practiced running. The overall findings of this study suggest that one day a week of running practice improved the mile run times of fourth graders in the control group, but that four days a week of running practice results in more significant improvement for the experimental group members. While it is not surprising that more running improves running times, the results do raise some interesting principles and practice issues. The results suggest that six weeks of running club practice during recess, in addition to running in physical education class, is insufficient for the majority of students to achieve state standards. A future study could investigate the effects of a longer intervention. (Contains 4 tables.)