The calculated distance (air line) between Ilām and Madhyapur Thimi is approximately 165 miles respectively 265 kilometers.
By car or train, the actual journey to Madhyapur Thimi is certainly longer, as only the direct route (as the crow flies) between Ilām and Madhyapur Thimi has been calculated here.
Air line (approximately)
265 kilometers
143 nautical miles