['To identify the prevalence of injuries occurred during training and/or competition in triathlon athletes at SESC Triathlon Caiobá-2011.', 'One hundred and ninety athletes participated in the study (153 males and 37 females).', 'Athletes reported time of practice between 3 to 6 years (20%), training frequency of 5 days per week (48%), at least one injury during trainings (76%). The prevalence of injuries according to the sports category was: running (79%), cycling (16%) and swimming (5%). The most injured region during training (39%) and competition (46%) was the calf. Female athletes reported 92% of injuries during running training and 35% of those injuries were on ankle and foot. During competition only two athletes reported injuries. Muscle injury was the most prevalent (54%) among male athletes, followed by tendon (19%), ligament (17%) and bone (9%) injuries. Among female athletes prevalent injuries were: 32% muscle, 32% bone, 32% tendon and only 4% ligament injuries.'] Does profile of injure prevalence in athletes who participated in SESC Triathlon Caiobá-2011?