Can you go back to tae kwon do after 13 years and retain my belt?

That is going to depend upon your

instructor. If you have not practiced in thirteen years, it is

going to be difficult to pick up where you left off. You would be

better off to start over. If you pick things up quickly, you are

likely to get promoted quickly.

For example, in one particular

community in Oregon three children about 8 - 10 years old quit

Taekwondo when their school changed locations. They had had

attained the rank of blue belt. About a year later, when a new

school opened in their community, the joined at the rank of white

belt, but three months later, at their first belt test, they were

awarded green belts.