The calculated distance (air line) between Toa Baja and Juana Díaz is approximately 32 miles respectively 51 kilometers.
By car or train, the actual journey to Juana Díaz is certainly longer, as only the direct route (as the crow flies) between Toa Baja and Juana Díaz has been calculated here.
Air line (approximately)
51 kilometers
27 nautical miles