The calculated distance (air line) between Khangarh and Rahim Yar Khan is approximately 116 miles respectively 186 kilometers.
By car or train, the actual journey to Rahim Yar Khan is certainly longer, as only the direct route (as the crow flies) between Khangarh and Rahim Yar Khan has been calculated here.
Air line (approximately)
186 kilometers
100 nautical miles