At eighteen years of age, he won a gold medal and set a world record for the 100 metre wheelchair sprint (21.7 seconds), at the 1968 Tel Aviv Games. His Australian time of 20 seconds was not recognized as a world record due to the incorrect number of time watches used. A member of the 160 metre relay team, he won a silver medal at the same Games. At the South Australian's Sportsman's Association's Annual Lindy Awards, 1968, Munro was recognized for his outstanding achievements in Paralympic sports and in overcoming his disability. That same year he held the Australian Paraplegic records for Club and Discus throwing, and middleweight Weightlifting.