Though not a resident I was there for a 4-day meeting last January to
which I brought my bike (Bike Friday). The highway around the perimeter of the
island is generally in good shape. There are some sections that are a bit tight
or undergoing construction but overall it's fine. My general direction was
South??? (Counterclockwise out of Honolulu).
Also, I did a couple of "hilly" days which essentially means any road going
into the interior. Have a great time!