Tackle 9 miles (14.5 km) of class III–IV rapids on the Balsa River near La Fortuna. This guided half-day run mixes continuous whitewater, rainforest wildlife sightings, and a riverside Costa Rican lunch.
More ways to explore the area's outdoor wonders
The river greets you with a low growl that turns into teeth as you push off — nine miles of Rio La Balsa that demand attention. The channel threads through primary and secondary rainforest, the current nudging the boat into gulps and surges while toucans call from high branches and howler monkeys watch the procession. Expect more than 30 continuous rapids that swing between class III and IV: technical moves, punchy waves, and play spots wide enough to swim when guides give the cue.
Difficulty
challenging
Duration
5 hours (total)
Fitness Level
Good cardiovascular fitness and the ability to paddle aggressively for short intervals; comfortable in open water and able to swim.
Wildlife
History
The Balsa River courses through lands shaped by volcanic activity from nearby Arenal; rivers like the Balsa have long supported small agricultural communities outside La Fortuna.
Conservation
Operators often limit group sizes and follow leave-no-trace practices; avoid sunscreen with oxybenzone and dispose of waste in La Fortuna to protect aquatic life.
Reserve your spot on the Rafting Balsa River from La Fortuna - III & IV Class today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Arrive hydrated and light
Bring at least one reusable water bottle and leave heavy packs behind — the operator provides water, towels, and lunch.
Secure footwear
Wear closed-toe water shoes or sandals with straps to prevent losing footwear in waves.
Know your medical limits
This run is not recommended for pregnant travelers or those with spinal/heart conditions — disclose health issues when booking.
Time your photos
Protect electronics in a small dry bag and let guides know when you want to stop for a swim or photo — they control safe pull-outs.
Secure water shoes
Protects feet on rocky entries and stays attached during rapids.
Light, quick-dry clothing
Dries fast after swims and keeps you comfortable in warm, humid conditions.
summer
Small dry bag
Keeps phone, ID and cash safe from splashes and unexpected swims.
Reef-safe sunscreen and hat
Protects from sun during exposed stretches and on the shuttle; choose eco-friendly formulas.
winter