Walkway in Spain used pale sand (9)
I believe the answer is:
esplanade
'walkway' is the definition.
(I know that esplanade is a type of walkway)
'spain used pale sand' is the wordplay.
'spain' becomes 'e' (abbreviation for Espana).
'used' is an anagram indicator.
'pale'+'sand'='palesand'
'palesand' is an anagram of 'splanade'.
'e'+'splanade'='ESPLANADE'
'in' acts as a link.
(Other definitions for esplanade that I've seen before include "Seafront walk" , "Long wide pavement next to a beach" , "Seaside walkway" , "Sea-front drive" , "Walkway beside the seashore" .)