Its Newport, you never really have to drive far to go anywhere.
However, now sure how much of the Cliff Walk you are going to do. The Full Cliff walk starts at First Beach
(Easton's), and Ends at the start of the Ocean Drive. You will actually see the Breakers on your walk.
Most people don't actually do the whole thing as the end of the Cliff Walk tends to be just rocks vs a path.
You could in theory park your car at first beach, walk the cliff walk all the way to the Breakers, get off, (there is a street exit right after the Breakers), visit the Breakers, and walk back to the beach.
However, now sure how much of the Cliff Walk you are going to do. The Full Cliff walk starts at First Beach
(Easton's), and Ends at the start of the Ocean Drive. You will actually see the Breakers on your walk.
Most people don't actually do the whole thing as the end of the Cliff Walk tends to be just rocks vs a path.
You could in theory park your car at first beach, walk the cliff walk all the way to the Breakers, get off, (there is a street exit right after the Breakers), visit the Breakers, and walk back to the beach.