By land from San José, on the Inter-American Highway north to Bagaces, turn left onto a gravel road and continue south about 20 km to the park entrance. From the entrance continue 10 km to the administrative center (located in the old Hacienda Palo Verde). You can also take Route 27 to Caldera and then Puntarenas and then follow the Inter-American Highway North to Bagaces.

You can enter by water via the Tempisque River in the town of Puerto Humo, where you can tour the river in boat rentals to the Puerto Chamorro bridge about 2 km from the administrative area.

From the Daniel Oduber Quirós International Airport, drive south on the Inter-American North for about 22 Km from Liberia to Bagaces. Then turn right onto gravel road and continue south about 20 km to the entrance of the Palo Verde National Park.
By Bus: Take the San José-Liberia route (which takes about 4 hours), to the Bagaces Pulmitan Liberia stop (2222-1650). From there, take a taxi to the Palo Verde National Park, which takes about 45 minutes.