The calculated distance (air line) between Gorey and Dún Laoghaire is approximately 43 miles respectively 70 kilometers.
By car or train, the actual journey to Dún Laoghaire is certainly longer, as only the direct route (as the crow flies) between Gorey and Dún Laoghaire has been calculated here.
Air line (approximately)
70 kilometers
38 nautical miles