Known as the country champion from his home state of Queensland, he took out the 3-mile state title in 1949 in a record time of 4 minutes 51.4 seconds, a feat that earned him a shot at the Australian championships. In the 10-mile Australian race, Heseltine and fellow Queenslander Ken Caves put a lap on the rest of the field, allowing them to go head to head for the title. With a lap to go, Cave lead, but Heseltine joined Cave with 300 yards to go. It wasn't until the last 50 yards that Heseltine hit the front. He went on to beat Cave by a bike's length. He was then selected for the Empire Games in February 1950, where he won the gold medal in games record time.
