Playa Herradura is about 90 km west of San José — roughly 90 minutes by car on the Costanera Sur coastal highway. The drive from San José passes through the mountains before descending to the coast; the road is well maintained. From the Juan Santamaría International Airport the drive is around 80 minutes.
Public buses run from San José to Jacó and stop at the Herradura junction on the highway, but you will need a taxi or local bus to reach the beach from the main road. Having a car is strongly recommended if you plan to explore the area or visit Carara National Park.