All car rental companies on the Big Island prohibit you from taking your rental car on the road to Green Sand Beach. You can take the car as far as the end of South Point road, from there it is a 2.7 mile (4.3 km) hike to the beach. Note that the rides offered from the parking lot to the beach are operating illegally, without the consent of the landowner.
Read more about visiting Green Sand Beach on our website.