The calculated distance (air line) between Dayr al Ghuşūn and Jericho is approximately 40 miles respectively 64 kilometers.
By car or train, the actual journey to Jericho is certainly longer, as only the direct route (as the crow flies) between Dayr al Ghuşūn and Jericho has been calculated here.
Air line (approximately)
64 kilometers
35 nautical miles