mat.ward wrote: I think you might be out of luck with that plan if you don't want to do any off-roading.
What map are you looking at?
Jim at Remote Asia (
http://www.remoteasia.com) could probably help in drawing up a route that would be interesting but keep you out of trouble.
One option might be to head north on 13 till Thakhek then head east on 12 then north on 1E through Nakai towards Lak Xao (on highway 8 ), then west on 8 to meet back up with 13 for VTE. Apart from having to avoid the trucks for the dam construction it is a pretty interesting route if you only have four wheels.
Here is the section I have done from this loop:
Vientiane – Pakxan – Na Hin
Straight boring highway until you turn east onto highway 8 at Vieng Kham. Then it turns into a very scenic tarmac road winding through black karst and jungle.
Na Hin - Kong Lor Cave 40km-ish
This will soon be a fast sealed road. At the moment it is a fast dusty packed-dirt road where you need to slow for the unfinished concrete fords. Cool karst scenery. Check the 7.5km long Kong Lor cave out, US$10 for boat hire and boatmen (return).
Na Hin – Lak Xao
Na Hin to Lak Xao is winding great condition asphalt that travels through awesome limestone karst and jungle. Excellent.
Lak Xao – Nakai
Winding dusty/rocky road through jungle. You will get dusted/taken out by the trucks heading to/from the dam.
Nakai – Mahaxay – Xaybuathong
Fast packed dirt, the karst of Khammouane continues.
Kong Lor cave on highway 8 is worth a look.
A couple of posts about getting from 9 to 12 are here:
https://www.gt-rider.com/thailand-motorc ... t1941.html
https://www.gt-rider.com/thailand-motorc ... t2462.html