Kuscsik was a onetime American women's record-holder for a 50-mile (80 km) run, through her run of 6:35:53 in 1977 in
Central Park, New York. She continued running into her later years and was the first woman to finish the
Empire State Building Run-Up in 1979, 1980 and 1981. She was instrumental in influencing the
U.S. Amateur Athletic Union, in late 1971, to increase its maximum distance for sanctioned women's races, leading to official participation by women in marathons, beginning at Boston in 1972. Kuscsik was the only woman to participate in the first
New York City Marathon in 1970. She did not feel well and had to drop out without finishing. In the following year she was one of four female finishers. She won the event in 1972. That year Kuscsik, Pat Barrett, Lynn Blackstone, Liz Franceschini, Cathy Miller, and Jane Muhrke protested the rule of the
Amateur Athletic Union, which as implemented by the
New York City Marathon that year meant that women had to start running ten minutes before the men. ==Marathons==