Crossword Genius

Run as horse given start on town (6)

Ross

I believe the answer is:

bolton

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

'town' is the definition.
(I've seen this before)

'run as horse given start on' is the wordplay.
I cannot quite understand how this works, but
'run' could be 'bolt' (I've seen this in another clue) and 'bolt' is present in the answer.
'on' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for bolton that I've seen before include "Lancashire town" , "place in the northwest" , "Additional" , "Greater Manchester town with a "Wanderers" football club" , "Non-world-beaters (anag)" .)

I've seen this clue in The Sun.
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