She was born on 18. May 1966 in Otwock, Mazowieckie, Poland. She participated in the 1992 and 1996 Summer Olympics. Her personal long jump record is 6.96 meter set in 1994. In Denmark Pytełewska Nielsen was associated with the club Århus 1900 and she won most Danish golds in long jumps between 1990 and 2001. In Denmark she also participated in 60 metres, 100 metres and triple jump.