The Gulf of Thailand coastline south of Phnom Penh holds Cambodia's clearest water, its most private island resorts, and one of Southeast Asia's fastest-developing coastal cities. Sihanoukville is the departure point for Koh Rong, Koh Rong Sanloem, and the quieter outer islands — each with a distinct character and a distinct category of resort. FFGR Cambodia manages the full door-to-beach logistics for clients who want the Cambodian coast without the friction of unmanaged connections, public speedboats, and uncertain hotel transfers.
Phnom Penh to Sihanoukville — The Coastal Highway
The Phnom Penh–Sihanoukville expressway reduced the journey from four hours to under two. In an FFGR Mercedes V-Class, with your luggage stowed, cabin cooled, and the Gulf of Thailand appearing on the horizon as you exit the toll gate, this is one of the better road segments in mainland Southeast Asia. We depart from your Phnom Penh hotel at a time calculated to connect with your specific speedboat departure time at the Sihanoukville ferry terminal.
For clients arriving directly at KOS airport and connecting to the islands, the transfer from the terminal to the ferry dock takes twelve minutes. FFGR Cambodia pre-positions the vehicle at KOS arrivals and coordinates with the ferry operator to hold the boat if your flight is delayed within a reasonable window — a service that is impossible when arranging ground transport on arrival.
Sihanoukville Ferry Terminal — Cutting the Queue
The Sihanoukville ferry terminal operates multiple competing speedboat services to Koh Rong and Koh Rong Sanloem, with departures concentrated between 08:00 and 14:00. The terminal itself is unmanaged in the public lanes — ticket queues, luggage weighing, and boarding by announcement. FFGR Cambodia clients bypass this entirely through our arrangements with Speed Ferry Cambodia and the private speedboat operators who serve the luxury resorts directly.
For clients staying at Song Saa Private Island or the Alila Koh Russey, resort transfers are arranged via private speedboat from Sihanoukville's private jetty — a different facility from the public terminal, accessible only to guests with confirmed resort bookings. FFGR Cambodia coordinates the vehicle-to-jetty handoff so that your luggage transfers from vehicle directly to boat without you carrying it across a terminal.
Koh Rong — The Long Beach Approach
Koh Rong is the larger of the two main islands, with a mountainous interior, twelve kilometres of continuous beach on the western coast, and a village on the eastern side where the ferries dock. The best access to the northwest beach — the bioluminescent bay, the deep turquoise water, the section where no development has yet arrived — requires a boat transfer from the village, not a walk. FFGR Cambodia pre-arranges this inter-island transfer so that our clients move from the ferry directly to a private longtail waiting at the village dock.
On Koh Rong, we work with Vagabond Temple and Koh Rong Dive Center for clients who want structured activity alongside rest. Both operate private sessions for FFGR Cambodia clients outside their standard group schedules. The bioluminescence tour on the bay — a night swim in water that glows blue-green with dinoflagellates — is arranged for after 21:00 on moonless nights. We note the lunar calendar on all coastal bookings.
Koh Rong Sanloem — The Quieter Island
Koh Rong Sanloem is smaller, less developed, and more appropriate for clients seeking genuine quiet. Saracen Bay on the eastern coast has a calm, shallow lagoon suitable for kayaking and stand-up paddleboarding. The island's west coast, accessible by longtail from Saracen Bay, has beaches that receive no development noise. The Alila Koh Russey resort occupies a hillside above the southern tip of the island with views across the Gulf to the Thai coast on clear days.
FFGR Cambodia recommends Koh Rong Sanloem over Koh Rong for clients with children, for first-time Cambodia visitors seeking a recovery from long-haul travel, and for those whose primary interest is snorkelling and water rather than beach culture. The island's smaller scale means that five days here provides genuine rest — not the restlessness of a larger island where there is always somewhere else you have not yet been.
Private Island Options — Song Saa and Beyond
Song Saa Private Island occupies two small islands in the Koh Rong archipelago, connected by an over-water bridge. Forty-seven villas, a house reef, and a tasting-menu restaurant that sources from its own marine garden. FFGR Cambodia has a direct relationship with Song Saa's concierge team — villa assignments, activity scheduling, and the private boat transfer from Sihanoukville are coordinated between our operations team and theirs in advance of arrival.
For clients seeking a completely private option without resort infrastructure, we can arrange bareboat or crewed charter of a traditional Cambodian wooden vessel — a kabang — for multi-night anchored stays between the outer islands. This requires advance booking of four to six weeks and a minimum party of four, but provides an island experience with no neighbours, no schedule, and a crew who know the archipelago's unmarked anchorages.
Return Logistics and Onward Connections
Island departures require planning. The final speedboat from Koh Rong to Sihanoukville typically departs at 15:30, which means a Phnom Penh or airport connection requires either an overnight in Sihanoukville or an early morning departure from the island. FFGR Cambodia builds the return segment into the itinerary document at the time of booking — not as an afterthought when the stay ends.
For clients connecting to an international flight from PNH, we calculate the latest possible speedboat departure from the island against the check-in deadline at PNH, factoring in the expressway journey time and our standard 30-minute airport buffer. We will tell you directly if a same-day island-to-airport connection is not advisable — and suggest an alternative that works rather than one that only works if everything goes to plan.