A two-sport standout in cross country and swimming, Gelsomino graduated as the swimming program's record holder in nine individual and three relay events, two of which still stand today. Winner of the Metropolitan Championship in the 500m freestyle, she was named a GTE Co-SIDA Academic All-American as a senior and earned MAAC All-Academic recognition in both swimming and cross country. She was the 1992 MAAC cross country individual champion and earned All-East recognition in the same year. She holds the program cross country record with a 17:29 performance at the 1992 ECAC Championships, and produced the seventh best performance by a Lady Jasper in a 5K race at Van Cortlandt Park with an 18:30 performance in 1991.  She was a two-time team MVP of both the swimming and cross country teams.