Phnom Penh to Stung Treng (Border Crossing to Laos) is 376 Km so it may take 7 hours and 45 minutes to drive by National road number 7&11 on the way you can stop at Kampi (Kratie Province) to see Fresh Water dolphins but this is for early leaving from Phnom Penh only so if you like just tell our driver to stop, You can choose your departure time from Phnom Penh between 07:30 am till 02:30 pm Yes the transfer is from door to door so to make your trip smooth please kindly provide your clear pick up and drop off location address including hotel name and wait our driver on time at the hotel lobby he will looking for you name that you have been provide Example : « Welcome to Mr. abc……» then head to Stung Treng (Border Crossing to Laos), please download WhatsApp App it easy to contact us for any reason or you need more information.