The calculated distance (air line) between Ar Rām wa Ḑāḩiyat al Barīd and Jericho is approximately 13 miles respectively 20 kilometers.
By car or train, the actual journey to Jericho is certainly longer, as only the direct route (as the crow flies) between Ar Rām wa Ḑāḩiyat al Barīd and Jericho has been calculated here.
Air line (approximately)
20 kilometers
11 nautical miles