Southeast Asia forum

You will have to cover a LOT of ground if you are going from Bangkok, then to the south, then back to the north of Thailand, through Laos and then to Cambodia.

Maybe you could skip the south of Thailand and go to a beach in Cambodia instead if you wanted to visit the country?

Jus sayin

I reckon you could do it actually. If you started in Koh Samui, Koh Phangan and Koh Tao, headed to Bangkok, overnight train to Chiang Mai, you could do that in 2 weeks no worries. You could head into Laos, LP, VV, Vientiane, Thakhek, Pakse, that again could be done in a couple of weeks. Then spend a few days each in Phnom Penh and Siem Reap.

I am planning a similar trip at the moment and you will be on the move a bit but I think it is doable. If you HAD to get rid of something maybe eliminate Cambodia and save it for a Cambodia-Vietnam trip in the future.

Without being clear on what 'the summer' means - I'll assume July/August, so it is 2 months with a week in Hong Kong (that'll cost you, hope you have a friend to stay with - make sure to do the Dragon Back Ridge Trail for a morning excursion if it isn't too humid).

I agree with lucasdg, if it is 2 months you can certainly see some highlights and have some relaxing time in some spots - though you may find yourself skipping places you'd have like to check out. It really does depend on how much you want to see in each country and how much you like to stay in one place and relax.

It is easy enough to fly to BKK from HK, jump onward to a set of islands to relax for a week or two, then fly straight up to Chiang Mai or overland in two days there skipping spots between BKK and CM. You can explore the area around Chiang Mai for two weeks, or spend three days there, depending. The trip to Vientiane from there could cover a week via Luang Prabang and Vang Vieng - or it could take two if you want to overland through Luang Nam Tha and stop of in Nong Kiaow/Mung Ngoi. Depending on your pace, once you get to Vientiane, check your schedule and if you still have plenty of time work your way down through Southern Laos (Pakse, Tad Lo, Champasak, 4,000 Islands)to Cambodia, or fly to Siem Reap if you're behind schedule.

http://www.discoverhongkong.com/promotions/greatoutdoors/eng/html/hikings/hikings_dragon.html

it's a nice walk with a good view - recommend catching the bus at the bottom of the trail down to Shek O village for lunch and check out the small beach there.