The triathlon will feature 10 minutes each of aqua running, aqua cycling and swimming. The polar bear swim in the outdoor leisure pool begins at 11 a.m. The events are open to those age 15 and up. The cost is a minimum donation of $26 per person and includes a t-shirt, snacks and prizes. Proceeds benefit Living Waters International. Pre-registration is required. To register, call 770-564-4650.