The calculated distance (air line) between Foundiougne and Joal-Fadiout is approximately 25 miles respectively 40 kilometers.
By car or train, the actual journey to Joal-Fadiout is certainly longer, as only the direct route (as the crow flies) between Foundiougne and Joal-Fadiout has been calculated here.
Air line (approximately)
40 kilometers
21 nautical miles