Duo race around country (7)
I believe the answer is:
ecuador
'country' is the definition.
(Ecuador is an example)
'duo race around' is the wordplay.
'around' indicates anagramming the letters.
'duo'+'race'='duorace'
'duorace' anagrammed gives 'ECUADOR'.
(Other definitions for ecuador that I've seen before include "S. American nation" , "South American state" , "Land" , "Country of the Galapagos Islands" , "South American country, capital Quito" .)