The calculated distance (air line) between Cluain Meala and Rathfarnham is approximately 88 miles respectively 142 kilometers.
By car or train, the actual journey to Rathfarnham is certainly longer, as only the direct route (as the crow flies) between Cluain Meala and Rathfarnham has been calculated here.
Air line (approximately)
142 kilometers
77 nautical miles