You can park between trees off the Hwy. There is a tiny footpath by the 15 MPH sign. The beach is not marked. You will likely see cars parked along the road where there is a trail taking you to the most photographed beach in the islands. The undertow is deadly.
Several turnouts are here along the road for parking.
Kepuhi Beach Rights of Way are along Kuhio Hwy. You can also park at Haena Beach Park and walk down to Tunnels. This beach has become extremely popular lately. This park is located directly across from the Maniniholo Dry Cave. Lots of parking.