The mystery is solved regarding the dragstrip at Kekaha, Kauai. I have been in contact with Bill Turk, past-president of Kauai Raceway Park who informed me that the dragstrip was purpose built, and not an airfield. The strip from start to finish is 1320 feet with a shutdown area of 2700 feet...
This link goes to the HI State Transportation, Airports Division , and may have some info of interest to the group.
Airfields Airports — Hawaii Aviation
Kaneoheboy
The airstrip measures some 4,360 x 50 feet using "Google earth" and has a parallel taxiway that runs the length of the runway. It iis located east of the Hawaii National Guard firing range, in turn between the Pacific Missile Range Facility [PMRF] (ex-Barking Sands Air Base, ex-Bonham AFB). Both...
I Googled "Kauai Dragstrip" and found the Kauai Raceway located on the southwest between the town of Kekaha and the Pacific Missile Range (Barking Sands), It appears they use an old airstrip located close to a Naional Guard Firing Rance.
The dragstrip on Maui is the Maui Raceway situated on a...
Molokai's WWII airfield was known as "Homestead Field" a joint civilian-military field located at the Hawaiian Homesteads in Hoolehua. the Navy also occupied a small portion of the field as an auxiliary landing strip of Naval Air Station Puunene on Maui.
Other WWII military airfields included...