The calculated distance (air line) between Kuantan and Kuala Terengganu is approximately 106 miles respectively 171 kilometers.
By car or train, the actual journey to Kuala Terengganu is certainly longer, as only the direct route (as the crow flies) between Kuantan and Kuala Terengganu has been calculated here.
Air line (approximately)
171 kilometers
92 nautical miles