Yes. You can also say: Το τρένο είναι εκεί πέρα.

Εκεί είναι το τρένο. Another possible option for "The train is there."

This one is already an accepted translation. Are you sure that everything else in your sentence was correct? No mixed up keyboards or anything like that? ^.^

Τρένο and τραίνο are both correct spellings, but in listening exercises, only one spelling can be accepted.