The calculated distance (air line) between San Gregorio de Nigua and Santiago de los Caballeros is approximately 84 miles respectively 135 kilometers.
By car or train, the actual journey to Santiago de los Caballeros is certainly longer, as only the direct route (as the crow flies) between San Gregorio de Nigua and Santiago de los Caballeros has been calculated here.
Air line (approximately)
135 kilometers
73 nautical miles