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