The calculated distance (air line) between Balkanabat and Türkmenbaşy is approximately 83 miles respectively 133 kilometers.
By car or train, the actual journey to Türkmenbaşy is certainly longer, as only the direct route (as the crow flies) between Balkanabat and Türkmenbaşy has been calculated here.
Air line (approximately)
133 kilometers
72 nautical miles