The calculated distance (air line) between Candelaria de La Frontera and Usulután is approximately 96 miles respectively 155 kilometers.
By car or train, the actual journey to Usulután is certainly longer, as only the direct route (as the crow flies) between Candelaria de La Frontera and Usulután has been calculated here.
Air line (approximately)
155 kilometers
84 nautical miles