The Full Distance Triathlon California in Sacramento offers a fast, PR-friendly course in one of the most scenic cities for triathlons. Swim Course: The 2.4-mile swim starts in the American River near Township 9 Park, flowing into the Sacramento River and finishing near the Tower Bridge. With an average water temperature of 65°F (18°C), it’s the perfect swim to start your race. Bike Course: The 112-mile bike course takes athletes through Sacramento’s agricultural heartland, showcasing the ...