Anagrammatic clues about a race run (7)
I believe the answer is:
scuttle
'run' is the definition.
(scuttling is a kind of running)
'anagrammatic clues about a race' is the wordplay.
'anagrammatic' is an anagram indicator (I've seen this in other clues).
'about' is an insertion indicator.
'a race' becomes 'tt'.
'clues' with letters rearranged gives 'scule'.
'scule' placed around 'tt' is 'SCUTTLE'.
(Other definitions for scuttle that I've seen before include "receptacle for nuts" , "dish?" , "Scurry - sink - coal container" , "coal carrier" , "Sink with cutlets" .)