From Kuantan, drive north for about 2 hours, passing through the oil town of Kerteh, Paka and Dungun. From Dungun town, head further north for another 5 minutes. You should be passing over the Dungun river bridge. After the bridge, passing by the exit to Teluk Bidara recreational beach, you will see a curve on the road and giant rock boulders which marks the beginning of Rantau Abang beaches on your right. This beach is right after Tanjung Jara Resort. You may park you car here.
Rantau Abang beaches are well-known for its turtles. In fact, the state of Terengganu's penchant to associate itself with turtles started here in Rantau Abang. Although I have to say, nowadays there are more turtles landing in Pulau Redang and the Perhentians, while there are almost none in Rantau Abang.
Nonetheless, this beautiful beach makes up for it, at least to me. The water is crystal clear and enticing enough for a swim. In fact, during my visit, there were local children having fun at the beach. You could also climb the giant boulder rock, admiring its geological formation of different sedimentary layers throughout millions of years. Also it provides an amazing bird's eye view of the beach.
Surprisingly a great beach with crystal-clear water.