Half Distance Triathlon Washington Tri-Cities: Swim, Bike, Run SWIM Dive into the iconic Columbia River for a 1.2-mile downstream swim starting at Howard Amon Park near the Lee Boulevard Boat Dock. This point-to-point course ends at Columbia Point Park, where athletes will transition in a grassy athletic field. With an average water temperature of 68°F (20°C), this swim offers an ideal experience for athletes and prime viewing opportunities for spectators along the scenic Riverfront Trail. ...