Ke'ei Beach located just south of Kealakekua Bay. Coming from State Highway 160, make a turn into Ke'ei Road and follow the road to the ocean.
Small beach near Kealakekua Bay, one of the best-kept secrets on the Big Island's Kona Coast, Poor swimming conditions, but good fishing, surfing and snorkeling. Nice surrounding scenery and views. No facilities. No lifeguards.

From Kona, take Highway 19 north. Between mile markers 91 and 90, make a left turn onto the rugged, semi-paved road. Drive straight ahead for 1.5 miles (2.4 km) to the beach. Four-wheel drive vehicles are recommended, but most regular cars can handle it as well. The parking area is at an unpaved lot a short walk (5 minutes) from the beach. Note: There is a gate, which is open daily from 9 am to 7 pm, but is closed on Wednesdays.
Kekaha Kai State Park on the Big Island's west coast encompasses a handful of secluded bays and sandy beaches. The most beautiful ones are Mahai'ula Beach, Makalawena Beach and Kua Bay (also known as Manini'owali). Coastal trail connects the beaches. Good place for a variety of water activities: Swimming, snorkeling, diving, bodyboarding, surfing, kayaking. Facilities: Picnic tables, Restrooms. No lifeguards.

From Highway 19, turn on the public access road between mile markers 82 and 83.
Kohala Bay has beautiful sights, fascinating wildlife, tide pools, ancient ponds and rock formations. A mini-island made of lava rock right at the heart of the bay. Turtles can often times be seen here. Good for swimming, snorkeling,surfing and fishing. No facilities, No lifeguards.

The park entry road is located between Mile Markers #88 and #89 on Highway 19. Note: The gate is open from 9 am to 7 pm and is closed on Wednesdays.
Kua Bay (Manini'owali) is part of the Kekaha Kai State Park, salt-and-pepper coastline. Swimming and snorkeling conditions good during calm days . Diving, bodyboarding, surfing are good. Facilities: picnic tables, showers, restrooms. No lifeguards.

From Kona, take Highway 19 north. Between Mile Markers #89 and 88 take the dirt road to the left. The first portion of the road is decent, but it later becomes very bumpy. Alternately you can hike to the beach. It takes about 15-20 minutes.
Makalawena Beach is accessible via 4-wheel drive or 20-minute hike. The best place for swimming is in the largest inlet, snorkeling, scuba diving, bodyboarding, winter surfing are also good. An ancient Hawaiian fishing village used to be located here, Opae'ula Pond is located inland, it is an important shoreline bird sanctuary. No facilities. No lifeguards.

North of Kona take Highway 19 and make a left turn on Makala Boulevard, before reaching Mile Marker #99. At the end of the road, turn right on Kuakini and drive to the old runway. Plenty of parking is available.
Old Kona Airport State Park is old airport turned into a beach park, beach is long and wide, but rocky. Best place for swimming is at the southern end of the beach. Snorkeling, scuba diving and surfing are good. Facilities: showers, restrooms, picnic tables, pavilion, BBQ grills, drinking water, parking. No lifeguards.

From Kona, drive north on Highway 19. Before mile marker 70, make a left turn on Puako Road and then turn left at the next road. Park near telephone poll 71. The trail to the left leads to the beach.
Waialea Bay Beach is one of the few beautiful white-sand beaches on the Big Island. Ocean bottom drops off gradually, good for swimming, snorkeling, scuba diving, surfing and kayaking. Facilities: Showers, Restrooms, No lifeguards.