Race winner of fable (8)
I believe the answer is:
tortoise
'race winner of fable' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tortoise that I've seen before include "One that kept leading Achilles" , "Slow-moving four-footed reptile - outraced the hare" , "This creature might turn to Tories" , "Shelled animal" , "Expected to be slow" .)