The calculated distance (air line) between Terekli-Mekteb and Makhachkala is approximately 116 miles respectively 186 kilometers.
By car or train, the actual journey to Makhachkala is certainly longer, as only the direct route (as the crow flies) between Terekli-Mekteb and Makhachkala has been calculated here.
Air line (approximately)
186 kilometers
101 nautical miles