Puerto Jiménez opens the door to some of Costa Rica’s most striking natural challenges, where waterfalls command the landscape and wildlife stakes its claim in the dense rainforest. For trekkers ready to engage with terrain that shifts relentlessly—muddy river crossings, steep ascents, and unyielding tracks—this area delivers an authentic adventure.

Begin at the Cerro Osa Waterfall Trail. This 6.5 km out-and-back hike offers a moderate 350 meters of elevation gain over uneven soil and rock. The path twists through thick jungle that vibrates with cicada choruses, while the waterfall itself dares you close with roaring cascades that force a misty spray onto your skin. The trail demands sturdy footwear and a good pace, especially during the rainy season when the earth softens and calls for caution.

Another essential trek lies along the Agujitas River. This 8 km loop involves riverbed hiking, where currents pulse and benches of slippery stones test your balance with each step. The reward is multiple smaller falls and natural pools where tapirs and scarlet macaws make frequent appearances. Early morning visits are best for spotting wildlife before the forest settles into midday stillness.

Don’t miss the less-traveled San Pedrillo Falls. At 4 km round-trip with a steady incline of 250 meters, it’s quicker but steeper. The path is rugged, weaving under towering palms and strangler figs, offering close encounters with toucans and howler monkeys vocalizing their territory. The waterfall here behaves almost like a living force, pushing waters into natural plunge pools that invite a refreshing dip.

When planning, factor in hydration with at least 2 liters of water per person and consider lightweight, quick-dry clothing. Trekking poles can ease the strain on tricky slopes. Aim for hikes in the morning hours to avoid afternoon rain and heat spikes, typical in the wet season from May to November.

Together, these hikes provide a sturdy framework for experiencing the wild pulse of southwestern Costa Rica, where waterfalls aren’t just destinations but active participants—challenging your resolve, refreshing your spirit, and rewarding each step with sights that pull you deeper into the forest’s fiercely alive embrace.