Set the pace (4)
I believe the answer is:
lead
'set the pace' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lead that I've seen before include "Travel in front of" , "Be in charge of; metal" , "Show the way; soft metallic element" , "Chief part, element" , "First put down spade, say" .)