The calculated distance (air line) between Carrick-on-Suir and Dún Laoghaire is approximately 84 miles respectively 136 kilometers.
By car or train, the actual journey to Dún Laoghaire is certainly longer, as only the direct route (as the crow flies) between Carrick-on-Suir and Dún Laoghaire has been calculated here.
Air line (approximately)
136 kilometers
73 nautical miles