 Distance runner Ron Clarke is still the most successful Australian athlete in terms of setting world records, with seventeen official records from Two-Miles to the 'One-Hour run' between 1963 and 1968.Pole Vaulter Emma George is the most successful female Australian record-breaker, setting eleven world records from 1995 to 1999.Nathan Deakes set the most recent world record in Australia, at Geelong on 2 December 2006 when he recorded a time of 3-35.47 for the 50 km walk.