The calculated distance (air line) between Hafnarfjörður and Ísafjörður is approximately 143 miles respectively 230 kilometers.
By car or train, the actual journey to Ísafjörður is certainly longer, as only the direct route (as the crow flies) between Hafnarfjörður and Ísafjörður has been calculated here.
Air line (approximately)
230 kilometers
124 nautical miles