The last leg of the A83 takes it down the west coast of the Kintyre Peninsula, frequently running along the shore, but also darting in shore a few times to take a more direct route. Then, at Westport it turns eastwards, crossing to the north of Machrihanish and the airport to reach Campbeltown on the east side of the peninsula. The road once used to continue through the town to the point where the B842 and B843 diverge, but now stops in the town centre.
Kennacraig - Tayinloan
Just a short distance south of the Kennacraig ferry terminal, the B8001 turns left, heading east across Kintyre to Claonaig and the ferry to Arran. We then reach Whitehouse, where the old road loops around the back of the small green, before disappearing into the trees and rejoining a little further on where two new houses stand. A similar slight realignment seems to have taken place a mile to the south at Gartnagrenach, although the alignment of the old road seems to have completely disappeared at the eastern end. The road between the two is almost straight, albeit climbing over a low hill with woodland on the roadside.
The road climbs again, into forestry now and reaches a summit at 128m before starting the descent into Clachan. This is one of the areas badly affected by snow in spring 2013, causing the south end of the Kintyre peninsula to be cut off from the rest of the mainland. Just below the summit, an unsigned road turns right, marking the start of the lengthy Clachan Bypass. The old road meanders gently down the hill before dropping steeply into the village, whilst the new road takes a more measured route with short cuttings and a slight embankment to bring it into the village alongside the stream.
