The path to follow (5)
I believe the answer is:
trail
This clue is a double definition.
'the path' is the first definition.
(trail is a kind of path)
'follow' is the second definition.
(thesaurus)
'to' is the link.
(Other definitions for trail that I've seen before include "Dog - track" , "Path or track through wild or hilly country" , "Beaten path; lag" , "Track or mark left by something that has passed" , "Track - be behind" .)