The calculated distance (air line) between Oranjestad and Sint Michiel Liber is approximately 75 miles respectively 121 kilometers.
By car or train, the actual journey to Sint Michiel Liber is certainly longer, as only the direct route (as the crow flies) between Oranjestad and Sint Michiel Liber has been calculated here.
Air line (approximately)
121 kilometers
65 nautical miles