As Sihanoukville improves a lot in parts of trade, tourist business and other sectors, the road to Phnom Penh had to be rebuild properly. Now you can run the perfectly paved National Highway No 4 linking the capital with this seaside resort (230km).
The province could also be entered directly through Koh Kong Province from nearby Thailand, as more and more tourists do. It?s doable either by the bumpy Major Road 48 passing the edge of the Cardamom Mountains or by speedboat from Koh Kong town, next to the Thai border.
Bus/Minivan: From Phnom Penh:
Bus relatively comfortable; a/c buses depart Phnom Penh several times per day (starting from 7am to 1pm). The price is around 12,000R -16,000R for the 4 hours ride. The buses start mostly at the southwest corner of the Central Market (Phsar Thmey). In Sihanoukville, all buses arrive and depart from the central bus station on Street 108.
Minivans and guesthouse buses like from the re-known Capitol Guesthouse in Phnom Penh is running daily minivans to Sihanoukville. Departs Phnom Penh at 7:1am. 14,000 riel one-way. Buying a round trip ticket will grant you a little discount. In Sihanoukville contact Capitol Tours on Ekareach in the middle of downtown. SHV to PP departs at 12:30pm.
Most share taxis depart Phnom Penh before 10:00am, though you can still find one into the mid afternoon. The price varies between $3-5/person. Shared taxis offer a cramped and harrowing 2 1⁄2-3 1⁄2 - hour ride with 8 or more people stuffed in a compact car. Private taxis run about $20-$25. In Phnom Penh taxis wait at the southwest corner of the Central Market (Phsar Thmey). In Sihanoukville, Phnom Penh bound taxies wait on Street 108.
There are daily boats departing from Sihanoukville (500Baht, 4 hours) around noon for Krong Koh Kong. Most foreigners are unfortunately asked to pay 600Baht or $15. It's worth the tour as you pass by some virgin beaches and nice costal formations.
It is a 230 km, 4-5 hour trip on NH No 4. 200cc minimum. Rent motorcycles at Lucky Lucky Motorcycle on Monivong, near Street 184 in Phnom Penh or at Angkor Motorcycles on street 51 near the famous Walkabout Bar. Fast, easy, but still relatively dangerous road. Speeding taxis and reckless Lorries are the norm. Slow down through the villages, watch for slow animals and oblivious children. By all means wear a helmet and bear in mind that medical help and rescue is virtually non-existent in the countryside.
There has been a slight rumour in recent years, that the 13km airport near Ream has been renovated, but there are still no scheduled flights to Siem Reap for the temples-beach combo tour.