Hike 18 km from La Leona to Sirena through Corcovado’s primeval rainforest, spend a night at Sirena Biological Station, then return by boat to Puerto Jiménez. This two-day itinerary mixes long jungle walking, river crossings, and a scenic coastal boat ride.
More ways to explore the area's outdoor wonders
Dawn arrives as a thin wash of light through the canopy — you step from the 4x4 in Carate and the rainforest swallows the sound of civilization. The trail ahead is raw: alternating ribbons of beach and packed earth, muddy river crossings that dare you to stay dry, and a living ceiling of leaves where macaws flare like pockets of color.
Difficulty
moderate
Duration
2 days (approximately 48 hours)
Fitness Level
Good aerobic fitness and comfort walking 18 km with some elevation change and river crossings; able to carry a daypack and basic overnight gear.
Wildlife
History
Corcovado was designated a national park in the 1970s to protect critical lowland rainforest on the Osa Peninsula; Sirena has long served both researchers and park management.
Conservation
Strict park rules limit single-use plastics, drones, and off-trail travel; guided trips support research and patrols that protect this high-biodiversity area.
Reserve your spot on the Corcovado Leona – Sirena Overnight Hike (2 Days/ 1 Night) today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Start early
Most groups depart before sunrise to avoid midday heat and maximize wildlife activity; expect a 5:20 am meet in Puerto Jiménez.
Bring at least 2 liters of water
Hydration is critical on long jungle sections where humidity and exertion are high.
Expect wet crossings
Trails include small river and creek crossings — wear closed-toe hiking sandals or quick-dry shoes and secure socks.
Limit electronics and plastics
Park rules restrict single-use plastics and drones; bring a power bank and pack out any trash.
Waterproof hiking shoes or closed-toe water sandals
Handles river crossings and muddy trails while protecting feet from roots and rocks.
Lightweight rain jacket/poncho
Quick protection from tropical downpours and helpful for cooler mornings at camp.
summer
Headlamp with extra batteries
Necessary for night-time tasks at Sirena Station and early-morning walks.
Reusable 2L water bottle or hydration bladder
Keeps you hydrated over long trail sections; refill opportunities are limited.