About this guide

OahuGrandCircleIsland.com is an independent guide to the full-day tours that circle the island of Oahu, Hawaii. We are not a tour operator, a bus company, Star of Honolulu, the Hawaii Tourism Authority or Viator, and the site name describes the day trip we write about rather than any business. For official visitor information, see gohawaii.com.

Every stop list, stop length and price here comes from the operators' own Viator listings, read again before each update, and every attraction fact (opening hours, entry prices, park rules) from the attraction's own site or the Hawaii Department of Land and Natural Resources. Itineraries, prices and park access change; when a listing and this page disagree, the listing at checkout wins.

The site is funded by affiliate commissions: when you book through a Viator link here, we may earn a commission at no extra cost to you. That never changes what we recommend, including telling you that a $100 price is a half day or that a famous beach is only a drive-by. Details on the affiliate disclosure page.

Questions or corrections: contact us.