The calculated distance (air line) between T’aebaek and Pyeongtaek is approximately 105 miles respectively 170 kilometers.
By car or train, the actual journey to Pyeongtaek is certainly longer, as only the direct route (as the crow flies) between T’aebaek and Pyeongtaek has been calculated here.
Air line (approximately)
170 kilometers
92 nautical miles