The Half Distance 70.3 Triathlon in Lahti, Finland, features a scenic and well-organized course: Swim: A 1.9 km (1.2 mile) swim in Lake Vesijärvi, near Sibelius Hall. The swim start, exit, and finish line are all conveniently located at Satamakatu. The average water temperature is 64°F (18°C). Bike: A 90 km (56 mile) bike course that takes athletes through picturesque Finnish forests, lakes, and rolling hills, passing through villages such as Hollola, Sairakkala, Kärkölä, and Vesala, before ...