The calculated distance (air line) between Şabāḩ as Sālim and Kuwait City is approximately 9 miles respectively 15 kilometers.
By car or train, the actual journey to Kuwait City is certainly longer, as only the direct route (as the crow flies) between Şabāḩ as Sālim and Kuwait City has been calculated here.
Air line (approximately)
15 kilometers
8 nautical miles