When did you go first climbing? Is it correct? If it isn't correct.
** If it isn't correct. Please correct the mistakes in these sentence. **

-----------------------Thank you.-------------------------------------

Question

When did you go first climbing?  Is it correct? If it isn't correct.
** If it isn't correct. Please correct the mistakes in these sentence. **

-----------------------Thank you.-------------------------------------

Answer

"When did you first go climbing?" is the correct variant.