Pace changed at headland (4)
I believe the answer is:
cape
'headland' is the definition.
(I've seen this before)
'pace changed' is the wordplay.
'changed' indicates anagramming the letters.
'pace' with letters rearranged gives 'CAPE'.
'at' is the link.
(Other definitions for cape that I've seen before include "Garment - promontory" , "Batman has one" , "Shawl" , "Loose cloak or promontory" , "Horn or Good Hope - cloak" .)