Where are you going to go? vs Where are you going?

[Kiki]

we should write

Where are you going to go?

or

Where are you going?

and which one true

I'm going to go to Bali

or

I'm going to Bali

Please tell me?

[Mister Micawber]

.
Where are you going to go?
Where are you going?

I'm going to go to Bali.
I'm going to Bali.

All of these are fine. The two forms usually have the same meaning in context. The first form suggests a plan or decision for the future; the second form suggests inevitability.
.
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Native English teacher at Mister Micawber's