August 5, 2018. Niantic, Connecticut. A flat, sprint distance race throughout scenic shoreline communities of Niantic and East Lyme, the Niantic Bay Triathlon is a great race for beginner or experienced triathletes. Swim a 1/2 mile in the calm of Niantic Bay without waves or strong currents. Bike a 12-mile loop through East Lyme with water views and long straightaways along flat, shaded roads. Run 3.2 miles along the oceanfront area lined with cheering spectators before a spectacular beach finish. Niantic Bay Triathlon also offers an Aquabike race option. Post-race, take a refreshing dip in the bay and then enjoy fresh fruit, delicious freshly baked bread with spreads, yogurt, seasonal specialties and a visit to our own ice cream truck.