Gillings was born in the Isle of Man and began snowboarding at the age of 10, after switching from skiing. She competes in snowboard cross, and has won seven medals at the FIS Snowboard World Cup. At the 2006 Winter Olympics, Gillings finished 15th in the first ever women's snowboard cross event. In the 2007/08 season, her best results were 6th at the X Games in Colorado, US, 4th in the Korean (Sungwoo) FIS World Cup final, and 2nd in the Japan (Gugi-Gifu) FIS World Cup snowboardcross final. She was awarded British Olympic Association Athlete of the Year (Snowsport) 2007/08. In the 2008/09 season, she finished 3rd in the FIS World Cup meetings in Valmalenco, Italy and Bad Gastein, Austria, and won the German National Championships. She was awarded the British Olympic Association Athlete of the Year (Snow sport) for the second successive year. At the 2010 Winter Olympics, Gillings finished 8th in the women's event. In 2010/11, she finished 3rd in a World Cup meeting in Arosa, Switzerland,
