The calculated distance (air line) between Merthyr Tydfil and Aberkenfig is approximately 17 miles respectively 28 kilometers.
By car or train, the actual journey to Aberkenfig is certainly longer, as only the direct route (as the crow flies) between Merthyr Tydfil and Aberkenfig has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles