The calculated distance (air line) between Salinas de Hidalgo and Aguascalientes is approximately 63 miles respectively 101 kilometers.
By car or train, the actual journey to Aguascalientes is certainly longer, as only the direct route (as the crow flies) between Salinas de Hidalgo and Aguascalientes has been calculated here.
Air line (approximately)
101 kilometers
55 nautical miles