Education
Born in Christchurch in 1991, she was educated at Rangiora High School.
Born in Christchurch in 1991, she was educated at Rangiora High School.
She competed in the 800 m at the 2010 World Junior Championships, where she was again eliminated in the semi-finals, finishing in 2:05.51. In July that year, she ran the 800 m in 2:00.67 at a meet in Heusden, Belgium, just failing to qualify for the New Zealand team for the 2012 Olympics. In July 2013, she ran a personal best of 2:00.03 for 800 m in finishing fourth at the World University Games in Kazan, and backed it up two weeks later with 2:00.42 to finish fifth in the Diamond League meet in London.
At the World Athletics Championships in Moscow the following month, she clocked 2:00.60 in finishing fourth in her 800 m heat and did not progress further.
In 2007 she won the New Zealand secondary schools 800 m title, clocking 2:11.42. At the Athletics Canterbury Awards in 2010, she was co-winner with Tom Walsh of the junior athlete of the year award. At the 2012 New Zealand championships, she won the 800 m title and was second in both the 400 m and 1500 m. Petty and Walsh were joint winners of Athletics Canterbury"s athlete of the year award in 2013. Petty represented New Zealand in the 800 m at the 2014 Commonwealth Games in Glasgow, finishing fifth in the final in a time of 2.01:94.
The following year Petty represented New Zealand in the 800 m at the World Junior Championships in Bydgoszcz, Poland, finishing fourth in her semi-final in a time of 2:08.73, and she successfully defended her national schools 800 m title.
