The Mystic River Valley Triathlon is a 1/2 mile swim, 14.4 mile bike, 3 mile run. The swim is a triangular course around buoys in the Mystic River. We will have multiple waves. The bike is a 14.4 mile loop through Stonington-Mystic which is mainly flat with some small, quick hills. The run is a flat 3 mile run through Mason's Island.