Preparing for a Half Marathon

I'll be running the half marathon in Brisbane, Australia on 20 March 2011. In order to prepare for it I have identified a 10 mile rout from my house and back, here it is:http://www.walkjogrun.net/routes/current_route.cfm?rid=B900D905-CADA-79B0-69436262EEBF26C2&success=1