The calculated distance (air line) between Sakiet Sidi Youssef and Nabeul is approximately 134 miles respectively 215 kilometers.
By car or train, the actual journey to Nabeul is certainly longer, as only the direct route (as the crow flies) between Sakiet Sidi Youssef and Nabeul has been calculated here.
Air line (approximately)
215 kilometers
116 nautical miles