The calculated distance (air line) between Khā̃dbāri̇̄ and Kathmandu is approximately 118 miles respectively 190 kilometers.
By car or train, the actual journey to Kathmandu is certainly longer, as only the direct route (as the crow flies) between Khā̃dbāri̇̄ and Kathmandu has been calculated here.
Air line (approximately)
190 kilometers
102 nautical miles