She was born in Nivala, and was dominant women's cross-country skiing in the 1970s, earning five Winter Olympic medals and four FIS Nordic World Ski Championships medals (golds in 5 km and 4 × 5 km relay (both 1978), and bronzes in 3 × 5 km relay (1970), 10 km (1974), and 20 km (1978).).
Takalo also won the women's 5 km at the Holmenkollen ski festival in 1976.
For her cross-country skiing successes, she earned the Holmenkollen medal in 1977 (Shared with Hilkka Riihivuori and Walter Steiner).