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Koh Rong has no airport and no bridge, so leaving for Poipet starts on the water: a short boat ride past turquoise bays, then a long day or night on the road across Cambodia to the Thai border. Poipet is a busy casino and market town at the frontier, a common first stop on the way to Bangkok. You can book your onward bus tickets through GoAsia.cc.
Koh Rong to Poipet by Ferry and Bus
The trip has three parts. Speedboats and ferries link Koh Rong with Sihanoukville Pier in about 45 minutes.[1] From Sihanoukville, Giant Ibis runs a 4-hour bus to Phnom Penh over the expressway, leaving from its ticket office on Phe Street next to the Autonomous Port.[2]
From Phnom Penh, Larryta Bus runs sleeping buses and minivans to Poi Pet.[3] Prefer to skip Phnom Penh? Giant Ibis also runs a night bus from Sihanoukville to Siem Reap at 19:00,[4] and Larryta links Siem Reap with Poi Pet.[3]
There is no single ticket for the whole trip, so plan an overnight stop in Phnom Penh or Siem Reap, or time the sleeper buses to cover the night.
Comparing Your Options
| Leg | Operator | Duration |
|---|---|---|
| Koh Rong to Sihanoukville | Ferry or speedboat | 45 min[1] |
| Sihanoukville to Phnom Penh | Giant Ibis bus | 4h[2] |
| Phnom Penh to Poi Pet | Larryta sleeping bus or minivan | Varies by service |
Tips for Traveling from Koh Rong to Poipet
- Pick the Right Pier: Koh Rong has several piers, including Koh Touch and Long Set. Check with your accommodation which one your boat leaves from.
- Arrive Early: Larryta asks you to be at the bus station 15 minutes before departure.[3]
- Prepare for the Border: Have your passport and any visa documents ready before you reach Poipet if you cross into Thailand.
- Carry Cash: There are no ATMs on Koh Rong, so take enough US dollars with you.[1]
- Keep Valuables Close: On sleeper buses and vans, keep your passport, electronics and cash in a small daypack instead of the luggage hold.
Frequently Asked Questions
Use the booking tool on this page to compare the transport options currently available from Koh Rong to Poipet, including current prices and schedules.
Take the ferry or speedboat to Sihanoukville, then a bus to Phnom Penh or Siem Reap, and continue to Poi Pet with Larryta Bus.
The ferry or speedboat from Sihanoukville Pier to Koh Rong takes about 45 minutes.
Giant Ibis takes about 4 hours over the expressway.
Yes. Giant Ibis runs a night bus from Sihanoukville to Siem Reap at 19:00, and Larryta runs sleeping buses to Poi Pet.
No. Take enough US dollars with you before you board the boat.
Poipet is a busy border town known for its casinos and border market. Larryta has a branch in Poi Pet.
Sources and background
Numbers in the text such as [1] refer to these sources.
- [1] Island Speed Ferry: Koh Rong: Cambodia Wild Island Paradise. Retrieved October 26, 2026.
- [2] Giant Ibis Transport: Bus from Sihanoukville to Phnom Penh. Retrieved October 26, 2026.
- [3] Larryta Bus: Larryta Bus: Cambodia Bus Booking. Retrieved October 26, 2026.
- [4] Giant Ibis Transport: Bus Schedule. Retrieved October 30, 2026.
Guide prices and journey times are indicative, not live quotes. A booked package may include transfers and waiting time as well as the main journey. Check the selected offer, pickup point and current conditions before booking.