Ostional National Wildlife Refuge wilderness guide
National Wildlife Refuge · Costa Rica

Ostional National Wildlife Refuge

Ostional National Wildlife Refuge is an essential nesting site for olive ridley sea turtles, offering visitors the unique opportunity to witness mass turtle nesting events.

National Wildlife Refuge210

Designation

National Wildlife Refuge

Total Wilderness Area

210

Elevation / Terrain

Diverse Wilderness

Field Editorial Guide

About Ostional National Wildlife Refuge

Ostional National Wildlife Refuge is an essential nesting site for olive ridley sea turtles, offering visitors the unique opportunity to witness mass turtle nesting events.

Wilderness Landscape & Natural Heritage

Located on the Pacific coast of Costa Rica, Ostional National Wildlife Refuge is best known for its role in protecting the olive ridley sea turtles that nest on its beaches. Established in 1984, the refuge encompasses 85 hectares of riverine and coastline habitat that supports a range of flora and fauna. The beach is a critical site for the arribada, a natural phenomenon where thousands of turtles come ashore to lay their eggs. The refuge also includes mangroves and tropical dry forests, which are vital for the ecological diversity of the area. In addition to turtle watching, visitors can enjoy pristine beaches and explore rich biodiversity. The local community collaborates closely with conservation efforts, offering tours that educate about marine life and conservation. The refuge appeals to wildlife enthusiasts and photographers eager to capture the sight of sea turtles in their natural environment.

Field Guide · National Wildlife Refuge
Adventure Destinations

Notable Destinations Near Ostional National Wildlife Refuge

Scenic viewpoints, outdoor landmarks, and notable points of interest within 60 miles.

Key Wilderness Highlights

✦ Witness the yearly arribada of olive ridley sea turtles.✦ Explore the diverse ecosystems of mangroves and tropical dry forests.✦ Enjoy guided tours led by knowledgeable locals about marine conservation.✦ Experience the serene and picturesque beaches of the refuge.
Wilderness Recreation

Outdoor Adventures in Ostional National Wildlife Refuge

Explore curated guides for top outdoor sports, trail networks, and wilderness activities.

Park Recreation

Hiking

Available in Ostional National Wildlife Refuge
Park Recreation

Wildlife Viewing

Available in Ostional National Wildlife Refuge
Park Recreation

Photography

Available in Ostional National Wildlife Refuge
Park Recreation

Beach Walking

Available in Ostional National Wildlife Refuge
The Ranger Station

Visitor Logistics & Essential Planning

Everything you need to know about entrance passes, seasons, visitor centers, road transit, and wildlife safety in Ostional National Wildlife Refuge.

Passes & Fees

Entrance Requirements & Interagency Passes

Entrance fee required, tours often booked through local associations.

Wilderness Checklist

Carry paper topographic map & compass in remote zones.
Store all food and scented items in approved bear canisters.
Check wildfire / smoke advisories before backcountry departure.
Pack out everything you pack in (Leave No Trace).
Adventure Basecamps

Gateway Towns Near Ostional National Wildlife Refuge

Stay, dine, and gear up in these mountain towns and scenic basecamps surrounding the park.

Nosara, Guanacaste
⌖ 3.07 miles
Gateway Basecamp

Nosara, Guanacaste

Nosara, a surf and yoga paradise in Guanacaste, invites adventure lovers to catch waves, explore jungle trails, or unwind with yoga amidst stunning natural beauty.

December to April
Explore Town
Sámara, Guanacaste
⌖ 13.84 miles
Gateway Basecamp

Sámara, Guanacaste

Sámara is a welcoming beach town in Guanacaste known for gentle surf breaks, tranquil paddleboarding bays, and dry forest hiking. It’s an excellent destination for active travelers seeking relaxed coastal adventure and wildlife encounters.

Dry Season (December to April)
Explore Town
El Guapote, Provincia de Guanacaste
⌖ 16.60 miles
Gateway Basecamp

El Guapote, Provincia de Guanacaste

El Guapote in Guanacaste, Costa Rica, offers thrilling whitewater rafting on the Tenorio River, rich bird watching, and immersive hiking through volcanic landscapes. Adventure lovers will find rugged wilderness and vibrant wildlife just minutes from Pacific coast access.

December to April (Dry Season)
Explore Town
Nicoya, Costa Rica
⌖ 19.39 miles
Gateway Basecamp

Nicoya, Costa Rica

Nicoya offers a blend of beautiful beaches and lush landscapes for those seeking adventure. Hike, surf, and explore vibrant Costa Rican nature both on land and in the sea.

December to April
Explore Town
Nicoya, Guanacaste Province
⌖ 19.39 miles
Gateway Basecamp

Nicoya, Guanacaste Province

Nicoya in Guanacaste Province is a vibrant town known for its stunning beaches and close proximity to national parks. It's a perfect spot for hiking, surfing, kayaking, and wildlife watching.

December to April
Explore Town
Nicoya, Guanacaste
⌖ 19.39 miles
Gateway Basecamp

Nicoya, Guanacaste

Discover Nicoya, Guanacaste, where surfing, hiking, and beach exploration meet vibrant jungles and diverse wildlife. This laid-back town is perfect for adventurous souls.

December to April
Explore Town
Expert-Led Wilderness Expeditions

Guided Experiences in Ostional National Wildlife Refuge

Explore scenic backcountry routes and epic wilderness adventures with certified local mountain guides, naturalists, and outfitters.

BOOMERANG: A private panga snorkel to the Catalinas
ADVEXPEDITION
Potrero, Provincia de Guanacaste
SnorkelADV Bookable

BOOMERANG: A private panga snorkel to the Catalinas

A private half‑day snorkeling charter from Potrero aboard BOOMERANG — a 27' panga for up to seven people visiting top sites near the Catalinas Islands.

SnorkelPT2HCertified Outfitter
Bookable OnlineBook Trip
Hands-On Heritage and Wildlife: A Two-Hour Cultural Immersion at Playa Matapalo
ADVEXPEDITION
Playa Matapalo, Guanacaste Province
History TourADV Bookable

Hands-On Heritage and Wildlife: A Two-Hour Cultural Immersion at Playa Matapalo

A compact, two-hour experience from Diamante Eco Adventure Park that pairs a traditional Costa Rican farmhouse visit and hands-on sugar-cane, coffee and chocolate activities with access to the park’s animal sanctuary—this guide helps you plan what to bring and what to expect.

History TourPT2HCertified Outfitter
Bookable OnlineBook Trip
Have It All: A Full-Day Zipline and Sanctuary Circuit in Guanacaste
ADVEXPEDITION
Guanacaste Province
ZiplineADV Bookable

Have It All: A Full-Day Zipline and Sanctuary Circuit in Guanacaste

Diamante Eco Adventure Park’s All Day Adventure Pass combines a line tour and Superman ride, a hanging bridge over crocodiles, an animal sanctuary and botanical garden, plus beach time and lunch—this guide explains what to expect and how to prepare.

ZiplinePT2HCertified Outfitter
Bookable OnlineBook Trip