The calculated distance (air line) between Anbyŏn-ŭp and Ŭnch’ŏn-ŭp is approximately 118 miles respectively 189 kilometers.
By car or train, the actual journey to Ŭnch’ŏn-ŭp is certainly longer, as only the direct route (as the crow flies) between Anbyŏn-ŭp and Ŭnch’ŏn-ŭp has been calculated here.
Air line (approximately)
189 kilometers
102 nautical miles