Races round island to see wrecks (5)
I believe the answer is:
ruins
'wrecks' is the definition.
(I've seen this before)
'races round island' is the wordplay.
I cannot really see how this works, but
'island' could be 'i' (geographical abbreviation) and 'i' is located in the answer.
'races' could be 'runs' (running is a kind of racing) and 'runs' is found in the leftover letters.
No letters remain.
This explanation may well be incorrect...
'to see' acts as a link.
Can you help me to learn more?
(Other definitions for ruins that I've seen before include "Damages beyond repair" , "Wrecks" , "Broken-down remnants" , "Mars" , "Remains to be seen" .)