4-day Guanacaste itinerary
Day 1: Arrival and first beach afternoon
Land at LIR, pick up your rental car, and head for your base - whether that's the resort corridor of Papagayo or the town energy of Tamarindo, you're on a beach within an hour of touching down. After checking in, the afternoon is yours: find the nearest stretch of sand, order something cold, and let the Pacific do its work. Evenings in Tamarindo reward a walk through town - the main street has good restaurants, a breezy atmosphere, and surf shops that will make you want to get in the water first thing tomorrow. If you're based in Papagayo, the resort grounds and a sunset drink on the bay will make an entirely adequate introduction.
Day 2: Full beach day and local exploration
Spend the morning in the water - surfing if you're in Tamarindo (the beach break in front of town is well-suited to learners and intermediates), swimming if you're in Papagayo, or snorkeling at Playa Conchal if you've positioned yourself on the Gold Coast. In the afternoon, drive to a nearby beach you haven't seen yet - the distances between Guanacaste's best beaches are typically 20–40 minutes, and each one has a different character. Playa Avellanas is 20 minutes south of Tamarindo; Playa Brasilito is 20 minutes north. End with dinner at a beachfront restaurant - fresh tuna, grilled dorado, and a glass of something cold is as good as dinner gets.

Day 3: Rincón de la Vieja day trip
An early start for the volcanic interior. Rincón de la Vieja National Park is about an hour from most Guanacaste beach bases, and the drive through the dry forest foothills is striking on its own. Inside the park, the Las Pailas trail leads past bubbling mud pots, sulfuric fumaroles, and a small volcanic crater lake - a geological landscape that feels like nowhere else in Central America. Longer trails lead to waterfalls and hot spring pools. Wildlife is prolific: white-faced capuchins, coatis, and the arresting cry of the three-wattled bellbird are near-certainties. Return to the coast for a late afternoon swim and dinner, legs tired in the best way.
Day 4: Final morning and departure
Use the morning for whatever the itinerary missed - a surf lesson, a catamaran snorkeling trip, a longer walk on a beach you keep passing. Guanacaste's pace rewards unhurried mornings. Return the rental car to LIR and transfer to the terminal with the particular satisfaction of a trip that delivered exactly what it promised - warm water, dramatic nature, and a version of Costa Rica that's easy to reach and hard to leave.