This event is for those 6 to 12 years old. Youths will compete in a swim, bike and run competition. The top three female and male overall competitors in each age group (6–8 and 9–12) will receive awards. Participation medals also will be awarded. Chesterfield resident cost: $17; non-resident: $20. Register at Chesterfield.Mo.US/Youth-Triathlon.html.