Kuscsik began jogging in 1967 using Bill
Bowerman's JOGGING book as a guide.
She began running competitively in 1969
when she entered the Boston Marathon as
an unofficial entrant, finishing in 3:46.
She completed 80 marathons with a best time
of 2:50:22. Kuscsik set an American record
for 50 miles in 1977 in 6:35:53. She represented
the United States in international competition
in Germany and Puerto Rico.
Kuscsik was the first woman to run in the
New York City Marathon, the first female
winner of the Boston Marathon and a two
time winner of the New York City Marathon.
Her winning time for the 1972 New York City
Marathon was on the slow side since the
women had a sit-down strike for ten minutes
after the gun went off to protest women's
inequality in marathon running.
Kuscsik introduced changes in the athletic
rules to allow women to run the marathon
distance in the United States and to hold
United States Championships. She also prepared
and introduced resolution adopted by the
USA and the International Amateur Athletic
Federation (IAAF) to place the women's marathon
in the Olympics. She presented beginning,
marathon and women's running clinics to
athletic and professional organizations
throughout the United States. Kuscsik wrote
training articles for Runner's World, Women's
and Fitness Magazines.
Kuscsik was a commentator for running events
and training commentary with 1010 WINS and
CBS Radio, New York.