We had a blast biking Southeast Thailand. The roads are pretty good (everything is relative), and there are bike paths as well as a tourism route which surprised us both.
We visited a number of small beach towns and had lunch at small spot on the water with a cheeky monkey that was frustrating the restaurant owners.
We also had a chance to visit a beautiful mangrove forest that the government is currently restoring. It used to be home of manatees but unfortunately, those are long gone now.
The region of Rayong is a bit of an agricultural area. We spotted rubber trees, papaya, red peppers, durian trees (the king of fruit with quite a vile aroma), shrimp farms, salt farms and a catfish farm.
The number of wild and semi wild dogs in the area is quite significant. There seemed to be one to a few every kilometer or so, and we ran into a couple large packs of 10 or so. However, they are all quite timid and except for one cranky, pregnant one, we were not challenged or chased by any.
In general, we were both surprised at the relative prosperity of the region. While there was certainly no lack of modest homes and farming bungalows, there was also no lack of 7-Elevens and brand new Toyota pick-up trucks. It also appears that the government has invested significant money in the region to support tourism given the well done rest areas, bike lanes and the general infrastructure. Overall, it is a great spot to bike.