Ultimately (2,3,4,3)
I believe the answer is:
in the long run
'ultimately' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for in the long run that I've seen before include "When all is said and done" , "Eventually" , "Where marathon racers compete" , "Where marathon competitors are seen" , "At the end of the day" .)