Zahn was a keen cyclist from a young age, despite being diagnosed with the degenerative neuromuscular disorder Charcot-Marie-Tooth.

He became a Para-cyclist in 2005, earning a place in the national team in 2007.

At Beijing 2008, Zahn achieved a Paralympic bronze medal in the individual time trial LC4 classification.

He also competed at London 2012, despite being involved in a car accident just six weeks before.

Zahn retired from competitive cycling in 2014. 

A long-time member of the Charcot-Marie-Tooth Association, he then worked as an ambassador for the organisation while also coaching cyclists of all levels. 

"Today we mourn the loss of a talented member of our Paralympic family," said US Paralympics Cycling director Ian Lawless.

"Anthony’s dedication and passion for cycling was unparalleled as he worked tirelessly to carve out an illustrious 25-year career as an athlete and two-time Paralympian. 

"After retirement, he remained committed to mentoring, coaching and inspiring the next generation of Paralympic athletes. 

"His influence, pursuit of excellence and spirit will be remembered."

Zahn’s wife, Liz Bernstein, has organised a memorial ride in California. 

The ride is scheduled for September 12, the 12th anniversary of Zahn’s medal-winning performance at Beijing 2008.