Can I use the preposition at the beginning of the sentence?

Question

There is a sentence

To where are you going to go?

Is this one correct? Or should I write

Where are you going to go to?

Thanks in advance

Answer 1

Sentences like "To which book do you refer?" are grammatically correct but sound very stilted and formal; on the other hand, going to go is rather informal.

You could say "Where are you going to go?" (To isn't strictly necessary) or even "Where are you going?" if the context makes it clear that a future journey is being discussed.