Leaving behind the white sands and vibrant nightlife of Koh Rong for the secluded charm of Khum Kaoh Sdach (King Island) feels like stepping back into a quieter version of Cambodia. While Koh Rong has grown into a world famous destination, Kaoh Sdach remains a hidden gem where the local fishing village atmosphere still reigns supreme and the surrounding waters offer some of the most pristine snorkeling in the archipelago.
This journey takes you across the turquoise waters of the Gulf of Thailand, connecting two islands that offer vastly different experiences. The transit is short but spectacular, offering views of the rugged coastline of the Botum Sakor National Park as you head north toward this tranquil escape. Whether you are looking to dive into untouched coral reefs or simply want to escape the crowds, this boat trip is your gateway to a more authentic island life.
Koh Rong to Khum Kaoh Sdach by Ferry
The primary and most efficient way to reach Khum Kaoh Sdach from Koh Rong is by speedboat. This service is designed for travelers who want to skip the long journey back to the mainland and instead hop directly between the islands. The crossing is relatively short, typically taking around 45 minutes depending on the sea conditions and the specific pier used for departure on Koh Rong.
The speedboat service is operated with modern vessels that prioritize speed and efficiency. These are not the slow wooden supply boats of the past; they are powerful crafts equipped with life jackets and covered seating to protect you from the sun and salt spray. The price for this crossing is consistent at $21, making it an affordable way to move between island destinations without the hassle of returning to Sihanoukville. You can easily secure your spot for this crossing by booking through GoAsia.cc, which ensures you have a seat reserved on the scheduled departure.
The Speedboat Experience
Traveling by speedboat is an exhilarating experience. As the boat pulls away from the pier at Koh Rong, you get a final panoramic view of the island's famous long beaches before the captain throttles up. The ride can be a bit bumpy if there is a swell, so if you are prone to sea sickness, sitting toward the back of the boat where the movement is less pronounced is a good idea. The 45-minute duration is just long enough to enjoy the sea breeze and the deep blue of the Gulf without feeling like a long haul.
Upon arrival at Kaoh Sdach, the atmosphere shifts immediately. There is no massive tourist infrastructure here; instead, the boat docks near the local village, where life moves at a much slower pace. The proximity of the two islands makes this one of the most convenient island-hopping routes in Cambodia, allowing you to breakfast on Koh Rong and be settled into a guesthouse on Kaoh Sdach well before lunch.
Comparing Your Options
| Mode | Price (USD) | Duration | Comfort |
|---|---|---|---|
| Speedboat | $21 | 45 min | Moderate |
Tips for Traveling from Koh Rong to Khum Kaoh Sdach
- Check the Pier: Koh Rong has several piers (such as Koh Touch or Long Set). Always confirm with the operator which specific pier the speedboat departs from, as they are not all within walking distance of each other.
- Luggage Protection: While the seating area is covered, luggage is often stored in a designated area that might be exposed to spray. It is wise to have a rain cover for your backpack or ensure your valuables are in a waterproof dry bag.
- Sun Protection: Even though the ride is only 45 minutes, the tropical sun reflecting off the water is intense. Apply sunscreen before boarding and keep a hat handy for when you disembark.
- Cash is King: Khum Kaoh Sdach is a rural area. While some guesthouses are beginning to accept digital payments, there are no ATMs on the island. Ensure you withdraw enough USD or Cambodian Riel on the mainland or in the more developed areas of Koh Rong before you depart.
- Book in Advance: During the peak season (November to March), these inter-island boats can fill up quickly as they are often smaller than the large ferries running to the mainland. Booking your ticket a day or two in advance is highly recommended.
Timetable
| Ferry Koh Rong - Khum Kaoh Sdach $ 20.43 45m | |
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Frequently Asked Questions
You can book train, bus, flight, taxi, van, and ferry tickets from Koh Rong to Khum Kaoh Sdach directly on GoAsia.cc. Use the booking tool on this page to compare all available options and prices in real time.
The cheapest way to travel this route is by speedboat, which costs approximately $21 for a one-way ticket.
The speedboat is the fastest option, taking only 45 minutes to cross the water between the two islands.
The journey typically takes 45 minutes, though this can vary slightly depending on weather conditions and sea state.
Yes, there is a direct speedboat service that connects Koh Rong to Khum Kaoh Sdach, allowing travelers to avoid going back to the mainland.
No, there are currently no ATMs on Kaoh Sdach. You should bring enough cash from Koh Rong or Sihanoukville to cover your entire stay, including food and activities.
Since the speedboat can be bumpy, it is recommended to take motion sickness medication about 30 minutes before boarding and try to sit in the rear of the vessel where the ride is more stable.