Koh Rong 1-day itinerary

Arrive on the morning ferry from Sihanoukville and head straight to Long Set Beach (also known as Long Beach or 4K Beach) — a staggering 7-kilometre stretch of pristine white sand on the island's west coast that ranks among the most beautiful beaches in Southeast Asia. The sand is powder-fine, the water is warm and crystal clear, and the beach is backed by untouched tropical jungle. In the morning the beach is virtually empty — you may walk for half an hour without seeing another person. Swim in the calm turquoise water and dry off on the sand while watching hornbills fly between the trees.

Follow the cross-island trail from Long Set Beach through dense tropical jungle to Sok San village on the east coast — a traditional Khmer fishing community of about 500 people that has existed long before any tourists arrived. The trail takes about 40 minutes and passes through thick forest where you may spot macaques, monitor lizards, and colourful tropical birds. Sok San itself is a ramshackle but charming village with wooden stilt houses, fishing boats, and a small school. Grab a cold drink from the village shop and chat with the friendly locals before heading back.

Koh Rong is one of the best places in the world to see bioluminescent plankton — microscopic organisms that glow electric blue when disturbed in the water. On moonless nights, the phenomenon is spectacular: every movement in the water creates trails of blue light, as if swimming through liquid stars. The best spots are along Long Set Beach and around the pier at Koh Toch village. Wade into the dark water and sweep your hands to trigger the glow — it is genuinely one of the most magical natural experiences you will ever have.