One of Oahu's most rewarding hikes is the 2.5-mile round trip hike to Makapu'u Point, the most eastern point of Oahu. The hike to the point is mostly uphill and takes about an hour each way. If you take the hike, do it early in the day when the sun will be behind the cliff face as you climb. The views of Waimanalo Bay to the north and Sandy Beach and Koko Head to the southwest are spectacular. Is a a great spot for whale watching from December to May.