She won two 4 × 5 km relay bronze medals (1984, 1988) at the Winter Olympics.

[1] Määttä won a complete set of medals at the 1989 FIS Nordic World Ski Championships with a gold in the 4 × 5 km relay, a silver in the 10 km classical, and a bronze in the 15 km.

She earned her only individual victory at a 1992 event in Norway.

All results are sourced from the International Ski Federation (FIS).

This biographical article relating to Finnish cross-country skiing is a stub.