Hasten around to the capital (6)
I believe the answer is:
athens
'the capital' is the definition.
(capital of Greece)
'hasten around' is the wordplay.
'around' indicates an anagram.
'hasten' with letters rearranged gives 'ATHENS'.
'to' acts as a link.
(Other definitions for athens that I've seen before include "City of the Parthenon" , "European capital city" , "Capital of Greece" , "Hasten (anag) -- capital city" , "Hen sat down in the city" .)