Object of wild rage during a race (6)
I believe the answer is:
target
'object' is the definition.
(synonyms)
'wild rage during a race' is the wordplay.
'wild' indicates an anagram.
'during' means one lot of letters goes inside another.
'a race' becomes 'tt'.
'rage' is an anagram of 'arge'.
'arge' going inside 'tt' is 'TARGET'.
'of' is the link.
(Other definitions for target that I've seen before include "Something to aim for" , "purpose" , "Objective, mark" , "Point to aim at (6)." , "Select for attack" .)