Kids ages 5 to 12 (in age-appropriate groups) wil swim, bike and run theire way to medals and t-shirts when they compete in this third annual triathlon at the Pointe at Ballwin Commons. $20 per participant. Registration is limited to 200 participants. For a map of the course and entry form, go to www.ballwin.mo.us. 8 a.m. Register by Sept. 17. More information: 636-207-2359.