Eden won a silver medal in the Men's high jump C event at the 1980 Arnhem Games. He also competed in the Men's 100 m C, 400 m C and Men's Long Jump C athletics events, and the Men's 100 m Freestyle C-D – swimming event. In 1982, he emigrated to Australia due to inadequate support to New Zealand Paralympic athletes. In 1984, he decided to turn his attention to the discus and stated "I was not really tall enough (for the high jump) and lost a lot of natural spring after the second amputation"”.