We carried out a questionnaire survery of running injuries occurring in the 8th Saiki Banjou Kenkou marathon competition. There were 201 runners, 173 men and 28 women with a mean age of 47 years. 67 runners had sustained running injuries, 48% of which were knee disorders. Training distance showed a strong association with knee disorders in this study. However there were numerous slight knee injuries occurring in subjects many times until recovery, compared with other non-knee injuries.
