The calculated distance (air line) between Tānsen and Madhyapur Thimi is approximately 113 miles respectively 182 kilometers.
By car or train, the actual journey to Madhyapur Thimi is certainly longer, as only the direct route (as the crow flies) between Tānsen and Madhyapur Thimi has been calculated here.
Air line (approximately)
182 kilometers
98 nautical miles