A very short distance to one city (5)
I believe the answer is:
milan
'one city' is the definition.
(Milan is an example)
'a very short distance' is the wordplay.
I cannot really see how this works, but
'a' could be 'an' and 'an' is located in the answer.
'distance' could be 'mil' (I have seen 'tiny distance' mean 'mil' so perhaps 'distance' could also mean 'mil') and 'mil' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'to' acts as a link.
Can you help me to learn more?
(Other definitions for milan that I've seen before include "Italian city with La Scala opera house" , "Italian industrial city" , "town" , "Doorstep deliverer" , "Northern Italian city" .)