Races round bits of land (5)
I believe the answer is:
acres
'bits of land' is the definition.
'acres' can be an answer for 'land' (synonyms). I'm not certain of the 'bits of' bit.
'races round' is the wordplay.
'round' indicates an anagram.
'races' is an anagram of 'ACRES'.
Can you help me to learn more?
(Other definitions for acres that I've seen before include "Cares about the tracts of land" , "Scare (anag)" , "The Phoenix Park has 40 of them (5)" , "farmland maybe?" , "large area of land" .)