The calculated distance (air line) between Al Qāhirah al Jadīdah and Dayr Mawās is approximately 170 miles respectively 273 kilometers.
By car or train, the actual journey to Dayr Mawās is certainly longer, as only the direct route (as the crow flies) between Al Qāhirah al Jadīdah and Dayr Mawās has been calculated here.
Air line (approximately)
273 kilometers
147 nautical miles