The calculated distance (air line) between An Muileann gCearr and Kildare is approximately 31 miles respectively 50 kilometers.
By car or train, the actual journey to Kildare is certainly longer, as only the direct route (as the crow flies) between An Muileann gCearr and Kildare has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles