The Los Patos Ranger Station is located by the eastern entrance of the park and is accessed through Las Palma, the only town on this side of the park. This is a humid, if not wet hike, a three hour walk that takes you across the Rincon river many times. It is possible to do this trail horseback riding, and taxis are available during the dry season. This is a region of primary forests, pre-montagne and cloud forests. There are many trails in Los Patos. One of them goes to La Sirena, connecting the Guayami Indian Reserve.
The La Sirena Ranger Station is where you will find the ranger station headquarters and is the heart of the Corcovado National Park. Located right on the coast, you can stay overnight at this station before continuing on throughout the rest of the park. This is the hardest station to get to, but well worth it for those who take the time to make the trip. La Sirena to La Leona is a hot 16 kilometers beach hike that takes 7 hours to complete. Timing is important here because of the tide and also for the heat. This trail passes through rocks on the shore that can be crossed at low tide or else there is another trail that goes inland that is parallel to the beach, and that provides more shade. Beware of the Crocodiles at tide crossing and for extended hikes it is recommended going with a guide.
The La Leona Ranger Station is located at the southern most tip of the Osa Peninsula. This entrance is particularly popular with people coming from Carate and Puerto Jimenez. This 3.5-kilometer beach walk starts in Carate all the way to Leona. There are camping areas but tents are not provided. You will also need food and cooking equipment. From here you can continue on the same trail to the La Sirena Ranger Station. It is flat parallel to the beach and even pass by an old miners settlement and graveyard!