Just outside of town on the road towards the coast there is a spot where all the three big mountains of Hawaii (left to right) - Mauna Kea, Mauna Loa and Haulalai are visible, provided the weather cooperates.
Drive on Road 19 about 20 miles to Kohala Coast and visit Hapuna Beach State Park. It's one of the nicest beaches on the Island. Hapuna has beautiful white sand a clean sandy bottom, and great surf & boogieboarding. Visit the snack bar and get yourslef a giant hamburger.
What to do: Express your derring-do by leaping off the 30-foot jumping rock at the Kaena Point end of the beach.