Well here you go, you’ve already passed through the famous parts of the North Shore of Oahu, but you keep heading west until the semi-paved road turns to this, in Kaena Point State Park:
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Here’s the birds-eye view, with the North Shore on the left side of the photo.
Alls that’s left to do is to hop out of your rental and then walk a few miles to go ’round the point by foot, why not?
Put this one on your bucket list:
Kaʻena or Kaena Point is the westernmost tip of land on the island of Oʻahu. The point can be reached by foot from both the West (Waiʻanae Coast) and the East (Mokulēʻia) coastlines; walking in from the north side is recommended. An unimproved track extends some 3 miles (4.8 km) along the coast from the end of the paved road on the north side, where a gate prevents entry of all except authorized vehicles.
On the south side, at Kaʻena State Park, a paved road passes a beach before terminating into an unpaved road. It continues for a few miles, after which the road is washed out, and further travel must be on foot. It is not possible to travel around the point in a vehicle as the route is better described as a “path” in most places, and is lined on one side with a cliff and on the other with basalt rocks which are quite capable of damaging vehicles. The path is completely washed out in one place on the South side of the point and a rope helps hikers traverse the gap.