Rejhonová represented her nation at the 1998 World Allround Speed Skating Championships, finishing 27th overall, and at the 1999 World Single Distance Speed Skating Championships in the 3000 metres event finishing 24th. She participated at the European Speed Skating Championships for Women in 1998, 1999 and 2000. She also competed at other international competitions, including at ISU Speed Skating World Cups.