The calculated distance (air line) between An Muileann gCearr and Ballinasloe is approximately 39 miles respectively 62 kilometers.
By car or train, the actual journey to Ballinasloe is certainly longer, as only the direct route (as the crow flies) between An Muileann gCearr and Ballinasloe has been calculated here.
Air line (approximately)
62 kilometers
34 nautical miles