The calculated distance (air line) between Diyarbakır and Adilcevaz is approximately 149 miles respectively 240 kilometers.
By car or train, the actual journey to Adilcevaz is certainly longer, as only the direct route (as the crow flies) between Diyarbakır and Adilcevaz has been calculated here.
Air line (approximately)
240 kilometers
130 nautical miles