I live in Myanmar and ride all over the place on my little 125 Chinese motorbike. I just got a newer Chinese dirtbike but it still just a 150cc. I did a trip when my dad came here that I blogged about. I have all the places we went on google maps so you can get an idea of where you can go.
you can see my trip here
Some roads here are off limits or become off limits when incidents occur so it's good to watch the news and check out maps like these
to get a general idea of where you can go.