I was studying in my place a verry nice and simple apple tutorial regarding Core Data, the Core Data Tutorial for iOS.
By coding the example I noticed that it couldn't be executed without connecting my iphone. That time I wondered if I can fake the location manager with virtual updates. Let's google it.
That is perfect. Futuretap has released FTLocationSimulator that allows simulating Core Location in the iPhone simulator on the desktop. It sends fake Core Location updates taken from a KML file that describes a predefined route.
You can find it in github.com, an more precisely here.
Easy to use, enjoy it!