USMS members receive a discount on entry, with the fee including a one-day membership. The Charles River Swim takes place at the River Dock near the Hatch Shell on the Esplanade. The event features an impeccably crafted loop course along the picturesque Charles River, between the iconic Harvard and Longfellow Bridges. Participants begin and finish in the water, with chip timing for accuracy. The swim is perfect for water enthusiasts looking to challenge themselves amidst scenic views. Arrive early for check-in to be ready for this exciting adventure.