Hargreaves was born on 8 April 1986 in Hong Kong. She spent part of her childhood in the United States, and attended Saxe Middle School in Connecticut. When she was eleven years old, she moved to Australia, going to high school at Northholm Grammar School and New England Girls' School in New South Wales. She moved to the Netherlands in May 2011 in order to train with fellow Olympian Edwina Tops-Alexander, and lives there as of July 2012[update].
Hargreaves started riding as a child in Hong Kong. She has been coached by George Sanna since 2005 and is also coached by Tops-Alexander. Her primary training base is in Sydney, Australia. She trains six days a week, and is a member of Copabella Sporthorses, Arcadia, New South Wales.
She competed in several competitions in 2011. She finished 24th at the 2011 La Coruna CSI5 Grand Prix held in La Coruna, Spain, finished 13th at the 2011 Wien Stadthalle CSI4 Table A held in Wien Stadthalle, Austria, finished first at the 2011 Sydney Royal CSI1 held in Sydney, Australia and finished eighth at the 2011 Zuidwolde CSI2 held in Zuidwolde, The Netherlands.
In 2012, she finished first at the 2012 Doha Global Champions Tour in Doha, Qatar; finished 12th at the 2012 Lummen CSIO4 National Cup and finish 38th at the 2012 Lummen CSIO4 Grand Prix, both in Lummen, Belgium; and finished 30th at the 2012 at the Dortmund CSI3 Grand Prix held in Dortmund, Germany.
Later in 2012, Hargreaves was selected, with her horse Vedor, to represent Australia at the 2012 Summer Olympics in her first Games, to participate in the equestrian team jumping and individual jumping events.
|8th||2011||Zuidwolde CSI2*||Zuidwolde, The Netherlands|||
|24th||2011||La Coruna CSI5* Grand Prix||La Coruna, Spain|||
|1st||2011||Sydney Royal CSI1*-W||Sydney, Australia|||
|13th||2011||Wien Stadthalle CSI4* Table A||Wien Stadthalle, Austria|||
|1st||2012||Doha Global Champions Tour||Doha, Qatar|||
|30th||2012||Dortmund CSI3* Grand Prix||Dortmund, Germany|||
|38th||2012||Lummen CSIO4* Grand Prix||Lummen, Belgium|||
|12th||2012||Lummen CSIO4* Nations Cup||Lummen, Belgium|||
|Wikimedia Commons has media related to Julia Hargreaves.|
- "London 2012 - Julia Hargreaves". Australia: Australian Olympic Committee. Retrieved 2012-07-08.
- "Aussies name show jumpers for Olympics". Nine MSN. 8 July 2012. Archived from the original on 27 October 2014. Retrieved 2012-07-09.
- "Julia Hargreaves". Olympic Games – Official London 2012 Website. Retrieved 2012-07-31.
- "Julia Hargreaves". Aet.equestrian.org.au. Retrieved 2012-07-31.
- "Horses Australian equestrian teams named". Weekly Times Now. 13 June 2012. Retrieved 2012-07-09.