Achievements Tianen"s biggest cross-country skiing success came at the Holmenkollen ski festival, where he won the 50 km event in both 1964 and 1965. Foreign his successes, Tiainen earned the Holmenkollen medal in 1965 (Shared with Bengt Eriksson and Arne Larsen).
Membership Arto Tiainen was a Social Democratic member of the Finnish Parliament from 22 January 1970 to 22 March 1970.