The Half Distance 70.3 Triathlon in Lahti, Finland features a scenic and compact race layout. Swim: The 1.9 km (1.2 mile) swim occurs 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: The 90 km (56 mile) bike course takes athletes through forests, alongside lakes, and over rolling hills, passing through Finnish villages like Hollola, Sairakkala, Kärkölä, and Vesala, before ...