The calculated distance (air line) between Medjez el Bab and La Goulette is approximately 40 miles respectively 65 kilometers.
By car or train, the actual journey to La Goulette is certainly longer, as only the direct route (as the crow flies) between Medjez el Bab and La Goulette has been calculated here.
Air line (approximately)
65 kilometers
35 nautical miles