Luxembourg's Mac Girardelli skied a nearly flawless second run in Aspen, Colo., to win his fourth World Cup giant slalom of the season.

Girardelli, 21, edged Sweden's Ingemar Stenmark and Olympic champion Max Julen of Switzerland. The victory enabled Girardelli to clinch the '85 giant slalom title and nearly put him out of reach in the overall cup standings with 252 points, to 207 of Pirmin Zurbriggen of Switzerland . . .

Marina Kiehl of West Germany won a World Cup super giant slalom in Banff, Alberta, beating Michela Figini of Switzerland by nearly a half-second. Kiehl, who regained the lead from Figini in the overall giant slalom standings with the victory, finished in 1 minute 23.29 seconds.

Figini, the World Cup downhill champion, finished second for the third straight day in 1:23.70. Brigitte Oertli of Switzerland was third in 1:24.70 . . .

Nordic World Cup points leader Matti Nykaenen of Finland won the 90-meter umping event at the Holmenkollen Ski Festival outside of Oslo. He was 11.5 and 15.9 points ahead of Franz Wiegele of Austria and Gerard Balanche of Switzerland.

North American jumpers also did well. Mike Holland of Norwich, Vt., and Mark Konopacke of Kingsford, Mich., placed seventh and 10th, and Steve Collins of Canada was eighth.