The calculated distance (air line) between Las Cumbres and Unión Chocó is approximately 154 miles respectively 247 kilometers.
By car or train, the actual journey to Unión Chocó is certainly longer, as only the direct route (as the crow flies) between Las Cumbres and Unión Chocó has been calculated here.
Air line (approximately)
247 kilometers
133 nautical miles