Discipline: Para Alpine

Paralympic Participation: Torino 2006, Vancouver 2010

Marty grew up in Byron Bay. At 16 years of age, he contracted meningococcal disease and beat the one-in-ten survival odds although it resulted in double below the knee amputations

Having skied since he was five years old, having both his legs amputated below the knee did not keep him down, and he was back on the slopes within a year.

He made his Australian national team debut in 2005.

At his first Paralympics in Torino, Marty finished 33rd in the downhill, 21st in the Giant Slalom, 19th in the Slalom and did not finish in the Super G. He attributed his poor performance at the 2006 Games to his prosthetic legs, which "just didn't feel right during the speed events in Italy." Following those Games, he worked with prosthetist Peter Farrand to develop new legs that would address the problems in Italy. Continuing to ski following the 2006 Games, he earned a gold medal at a World Cup event in 2007 in Slalom, and a bronze medal in slalom event at a 2008 World Cup competition.

At the 2009 World Championships, he had a pair of sixth places finished in the Super G and downhill events.a

Prior to the 2010 Paralympics, Marty won a gold and silver medal in a downhill world cups.

Marty won the silver medal at the Vancouver Winter Paralympics in downhill and was ranked second in the world in the downhill standing class. He was selected as Australia's flag bearer for the opening ceremony.

In 2010, Marty won the silver medal at the Vancouver Winter Paralympics in downhill and was ranked second in the world in the downhill standing class.

Following this success, Marty retired from the sport and started his medical degree at Sydney University. His experience with meningococcal led him to study medicine. He wrote a paper on meningococcal disease, worked part-time on research about the disease, and talked about his experiences at conferences.

In 2023, Marty was one of the first inductees into the Griffith University Sports Hall of Fame.