Kathy Weider, like her twin sister, Anna, started skiing at the age of four. She had the marks of a champion before she reached the age of ten and it came as no surprise when she captured the Southern Ontario Junior Alpine Combined title in 1959 and followed up this success with a second place in Canadian Alpine Combined, second in the Downhill and third in the Slalom at the Osler Bluffs the same year.

It was a banner year for Kathy in 1960 as this record attests: First in the Junior Ontario Alpine Combined and a first in the Slalom and second in the Downhill.Just two weeks later she picked up a bushel of silver trophies in the All- Ontario Junior Championships: First in the Alpine Combined, First in the three-way combined (Alpine and Cross Country); First in the Downhill and second in the Slalom. Then came the Canadian Junior championships: First in the Alpine and Cross Country, third in the Alpine Combined, third in the Slalom and she was a member of winning Ontario Ladies Team. That year the Canadian Championships were held in Thetford Mines, Quebec.

In 1961, Kathy added to her laurels with wins in the Southern Ontario Alpine Combined and Slalom and a second place finish in the Downhill.
In 1962 she made the Canadian National “B” team and won the Quebec Senior Downhill title.
In 1963 Kathy competed in the Middlebury College Bowl in Connecticut and placed third in the Alpine Combined and the Slalom.
1964 was a season of victories: Three first place finishes in the senior Alpine Combined and Slalom and Downhill in the Quebec Senior meet. Three more wins in the Quebec Senior Zone “A” Divisional (Alpine, Slalom and Downhill). It must be pointed out that in the years 1962-63-64 Kathy competed under the colours of the University of McGill in Quebec.
She finished off the 1964 season with sensational slalom victories at Mount Plante and Val Dord.
The following year (1965) her major win came in the feature Slalom in the French Zone Championships at Chambousse, France. At that time, she was competing under the colours of the University of Grenoble.
In 1966, Kathy won the Southern Ontario Senior Ladies’ Alpine Combined. She was invited to represent the Canadian-American Circuit.