The Ballwin Race Series' Annual Ballwin Triathlon consists of a 300 Yard Swim, 9 Mile Bike, and 3.4 Mile Run. Participants start and finish at North Pointe Aquatic Center. The triathlon is limited to 300 participants. IT'S BACK this year: the Double Triathlon. If you are looking for a greater challenge, here’s your opportunity! Participants will complete the Ballwin Triathlon course and then head back to the pool to complete the course a second time beginning with one lap around North Pointe’s lazy river. There are only 60 slots available (first two heats) for the double triathlon so register early.