Half Distance Triathlon Maine - Ultimate Race Guide Swim Course: This point-to-point swim is powered by the river's strong current, allowing athletes to post record-breaking swim times. With an average water temperature of 69°F (21°C), it's the perfect start to your race, ensuring you're energized for the rest of the course. Bike Course: Cycle through 56 scenic miles in the stunning Kennebec River Valley. The course offers a blend of thrilling climbs and exhilarating descents, showcasing ...