The calculated distance (air line) between Mtskheta and Tqvarch'eli is approximately 170 miles respectively 273 kilometers.
By car or train, the actual journey to Tqvarch'eli is certainly longer, as only the direct route (as the crow flies) between Mtskheta and Tqvarch'eli has been calculated here.
Air line (approximately)
273 kilometers
147 nautical miles