Kalalau Beach is a beach on the Nā Pali Coast at the base of the Kalalau Valley in north-west Kauaʻi in Hawaiʻi. It is the final destination of the Kalalau Trail, one of the most difficult trails on the Hawaiian Islands. The beach is approximately 1 mile long, with trails snaking through the rest of the valley where people in hiding are rumored to live. There is a camp site on the beach, with a waterfall providing fresh water and composting toilets available. Camping requires a permit. All trash must be packed out. The beach is beautiful and secluded.
The beach has high surf, due to the lack of off shore reefs to break the waves. There are strong rip currents making swimming near impossible. In years past, companies offered a landing service, boating hikers in and out of the beach so that they could hike the trail easily. It is still possible to kayak into and out of the beach.
The trail ends at Kalalau Beach, as the ocean comes up the cliffs at the western end. Kayaking and swimming from Kalalau Beach are the only ways to reach Honopū Beach.
Long term tourists who stay beyond the authorized five days that a camping permit allows are generally considered squatters.