The calculated distance (air line) between Sauðárkrókur and Ísafjörður is approximately 101 miles respectively 163 kilometers.
By car or train, the actual journey to Ísafjörður is certainly longer, as only the direct route (as the crow flies) between Sauðárkrókur and Ísafjörður has been calculated here.
Air line (approximately)
163 kilometers
88 nautical miles