Full Distance Triathlon Chattanooga – Key Highlights Swim A 2.4-mile current-assisted swim in the Tennessee River starts upstream with a rolling dock entry and finishes at Ross’s Landing Park. Spectators can follow along the Chattanooga Riverwalk. Mid-70°F water temps may make wetsuits optional. Bike The 112-mile course features 4,300 feet of elevation gain across three loops on US-27, with dedicated lanes, fresh pavement, and views of the Cumberland Plateau. Run A scenic marathon through ...