The calculated distance (air line) between Jarābulus and Deir ez-Zor is approximately 157 miles respectively 253 kilometers.
By car or train, the actual journey to Deir ez-Zor is certainly longer, as only the direct route (as the crow flies) between Jarābulus and Deir ez-Zor has been calculated here.
Air line (approximately)
253 kilometers
136 nautical miles