|Men's cross-country skiing|
|1964 Innsbruck||4 x 10 km|
|1964 Innsbruck||50 km|
|1966 Oslo||50 km|
|1958 Lahti||4 x 10 km|
He won two medals at the 1964 Winter Olympics, a silver in the 4 x 10 km relay and a bronze in the 50 km. Additionally, Tianen won two medals at the FIS Nordic World Ski Championships, a silver in 50 km (1966) and a bronze in the 4 x 10 km (1958).
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. For his successes, Tiainen earned the Holmenkollen medal in 1965 (Shared with Bengt Eriksson and Arne Larsen).
Arto Tiainen was a Social Democratic member of the Finnish Parliament from 22 January 1970 to 22 March 1970.
- Arto Tiainen at the International Ski Federation
- Holmenkollen medalists at the Wayback Machine (archived February 24, 2007) - click Holmenkollmedaljen for downloadable pdf file (in Norwegian)
- Holmenkollen winners since 1892 at the Wayback Machine (archived February 24, 2007) - click Vinnere for downloadable pdf file (in Norwegian)
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