Watch: Sailing solo around the world

From starting with eight children a year, the charity, based in Newport, Rhode Island, now helps around 1,000 youngsters annually. Their disabilities vary from spinal cord injuries to autism, and Paul says when he races for gold next month, it'll be for them. You've only got a limited amount of time in life. So you may as well choose to put that towards positive effort, rather than squandering it on the negative Paralympian Paul Callahan "When we get on the starting line against 14 other countries, I want to win a gold medal just as much as they do -- but I've got an additional motivation," he said. "The better my team does, the more powerful impact it will have for Sail to Prevail."