Stretching far beyond Corcovado National Park’s famous borders, the Osa Peninsula’s backcountry near Puerto Jiménez offers a compelling mix of rugged terrain and thriving wildlife. This region invites adventurers of all stripes to engage directly with untamed nature along its forested trails and roaring waterfalls that write their own stories in rushing water and mist.

Start at the Las Palmas Waterfall Trail, a 6.5 km round trip that elevates roughly 300 meters through dense rainforest. The trail challenges footsteps with steep sections and muddy patches after rain, demanding sturdy footwear and steady pacing. The forest canopy shifts as you ascend, occasionally clearing to reveal vibrant vistas where toucans call and spider monkeys swing above. The waterfall itself is a forceful drop into a turquoise pool that dares swimmers to dive in—beware of slick rocks and strong currents.

For a longer outing, the Rio Tigre Trail stretches 10 km one way along undulating rivers and tangled forest floors. The elevation gain here is moderate at 250 meters but consistent, with occasional river crossings that require careful footing. Here, wildlife eyes watch from shaded underbrush: peccaries grunt, and bright-colored frogs peek from leaf litter. Several smaller falls punctuate the path, each offering a chance to cool off and absorb the jungle’s humming pulse.

The La Leona route combines wildlife encounters with impressive waterfalls along a mixed-terrain 8 km trail, including sections of rocky riverbed and loose soil. Elevation gain is about 200 meters, and the path curves past fig trees dripping with fruit, attracting toucans and agoutis. Near the midpoint, a cascade crashes into a natural pool framed by towering ferns—ideal for a reflective pause. Early morning hikes maximize the chance to spot motmots and howler monkeys stirring awake.

Preparation is key. Carry at least two liters of water per person, wear waterproof hiking boots with good ankle support, and pack insect repellent. Start early to avoid midday humidity and frequent afternoon showers. Employ trekking poles on river crossings and steeper descents for balance. Each trail demands respect—a place where nature remains fiercely itself, inviting discovery without shortcuts.

These routes present a balance between adventure and accessibility, offering insights into one of Costa Rica’s richest ecosystems without requiring expert skills. Whether it’s the thrill of spotting jaguars from a safe distance or listening to waterfalls’ persistent music, the landscapes around Puerto Jiménez challenge and reward with equal measure.