The calculated distance (air line) between Gasteiz / Vitoria and Gernika-Lumo is approximately 32 miles respectively 52 kilometers.
By car or train, the actual journey to Gernika-Lumo is certainly longer, as only the direct route (as the crow flies) between Gasteiz / Vitoria and Gernika-Lumo has been calculated here.
Air line (approximately)
52 kilometers
28 nautical miles