The calculated distance (air line) between Jisr ash Shughūr and Al Bāb is approximately 77 miles respectively 124 kilometers.
By car or train, the actual journey to Al Bāb is certainly longer, as only the direct route (as the crow flies) between Jisr ash Shughūr and Al Bāb has been calculated here.
Air line (approximately)
124 kilometers
67 nautical miles