TINAMARIENOCCOGO
Answered

does this sentence have fragment
Long before she started skating, Kelly was a talented downhill skier.​

Answer :

KAYOVERGO
No, It does not have a fragment.
It is not a fragment as written but it contains a fragment. "Long before she started skating" cannot stand by itself as a sentence, therefore it is a fragment. However when paired with the rest of the sentence it is complete.