Christmas Day for Maria means another day of hard cycling. Antartica is vicious but beautiful says Maria's as she spends Christmas Day in the coldest place on earth.
Her cycling record has been an amazing 81km per day and on a continent where it never gets dark she has spent as little time as possible sleeping and the maximum time she can cycling.
Sudden changes in weather patterns bring total white outs and fierce winds constantly blast her progress.
Undaunted, Maria is determined to reach the South Pole within the next three days.