If you use miles as a unit of length than - the distance from Thornbury to Koo-Wee-Rup is zero miles.
The road trip out of Thornbury to Koo-Wee-Rup will take if you drive with average speed and the absence of accidents and traffic jams
Watch distance between Thornbury and Koo-Wee-Rup
Flight from Thornbury to Koo-Wee-Rup