The calculated distance (air line) between Rahim Yar Khan and Muzaffargarh is approximately 126 miles respectively 203 kilometers.
By car or train, the actual journey to Muzaffargarh is certainly longer, as only the direct route (as the crow flies) between Rahim Yar Khan and Muzaffargarh has been calculated here.
Air line (approximately)
203 kilometers
110 nautical miles