You can travel to all parts of Thailand by train for free.
Because the State Railway of Thailand has a free rail facilities.
From Bangkok to Chiang Mai, northern end.
From Bangkok to Sungai Kolok on the south end.
From Bangkok to northeastern upper.Best way to Nong Khai.
Thep from a next to the lower Northeast.Top of UB.
I went then by Train for free.
Very good.
Once in your life.
This requires a good experience to have.
