The calculated distance (air line) between An Muileann gCearr and Wexford is approximately 90 miles respectively 145 kilometers.
By car or train, the actual journey to Wexford is certainly longer, as only the direct route (as the crow flies) between An Muileann gCearr and Wexford has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles