The calculated distance (air line) between Dayr Abū Ḑa‘īf and Jericho is approximately 41 miles respectively 66 kilometers.
By car or train, the actual journey to Jericho is certainly longer, as only the direct route (as the crow flies) between Dayr Abū Ḑa‘īf and Jericho has been calculated here.
Air line (approximately)
66 kilometers
36 nautical miles