A long way from a farm (4)

I believe the answer is:

afar

I'm a little stuck... Click here to teach me more about this clue!

'a long way' is the definition.
(I've seen this before)

'a farm' is the wordplay.
'farm' becomes 'far' (I can't explain this - if you can you should believe this answer much more).
'a'+'far'='AFAR'

'from' is the link.

Can you help me to learn more?

(Other definitions for afar that I've seen before include "At a distance (poetic)" , "Many miles away" , "Many a mile" , "Unusually distant" , "Way-out" .)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.