the news is from Bicycle Victoria:
http://www.bv.com.au/inform.php?a=7&b=145&c=1310
the new, 2.2 km circuit open for cyclist and public in Cranbourne.
this facility is good to keep in mind, even if You do not cycle.
It could be great to stage some run races there, possibly some ultras, no conflicts with trafic etc, should be great for 100km, 24H or longer, but shorter stuff too.