The calculated distance (air line) between Carrick-on-Suir and Athlone is approximately 77 miles respectively 124 kilometers.
By car or train, the actual journey to Athlone is certainly longer, as only the direct route (as the crow flies) between Carrick-on-Suir and Athlone has been calculated here.
Air line (approximately)
124 kilometers
67 nautical miles