Fédération Aéronautique Internationale (FAI) - Model Aircraft World Records
Check out the following link
http://records.fai.org/models/current.asp
Not only can you have fun flying your model aircraft on the weekend, you can also have a go at breaking a world record with lots of practice. The above link shows a list of current records with a few Australians on the list. So if your up for a challenge give it a go.
Australia Record
On November 9, 2003, Ray Cooper wrote his name into the aeromodelling history books by setting a new world altitude record for an “Electric Propelled, Radio Controlled Aircraft”
http://www.ctie.monash.edu.au/hargrave/cooper_fai_altrec_2004.html
The electric glider reached a height of 2,573 m, Duration of flight: 31 mins 30 sec. (12 mins to max altitude 2,573 m)
Other Australian Records
http://www.maaa.asn.au/maaa/records.html