The calculated distance (air line) between Staryy Malgobek and Makhachkala is approximately 151 miles respectively 244 kilometers.
By car or train, the actual journey to Makhachkala is certainly longer, as only the direct route (as the crow flies) between Staryy Malgobek and Makhachkala has been calculated here.
Air line (approximately)
244 kilometers
131 nautical miles