Venturing into Yosemite Valley’s Lower Merced River Canyon, the Costa Rica (p1) route offers climbers a focused taste of runout slab climbing on slick granite that demands both finesse and controlled nerve. This 85-foot single pitch unfolds low on the wall, presenting a thin, gently angling slab with sparse protection. The route’s smooth surface invites you to trust your footwork across almost featureless rock, while the carefully placed new bolts provide critical but widely spaced safety points. While the runout nature of the climb will have you weighing each movement with deliberate care, the low angle moderates the exposure, making it an intriguing challenge for those ready to step beyond solid top-rope comfort but not yet prepared to commit to high-stakes leads.

The first pitch shines as an introduction to slab endeavours where precision replaces brute strength. Climbers can expect to engage their balance deeply, reading subtle shifts in friction and texture as they ascend. The newly installed three 3/8” bolts culminate in a secure 2-bolt anchor, enhancing the confidence this climb now affords compared to its previous sparse protection. However, the route still carries an R rating for runout sections that encourage climbers to assess their comfort with protection gaps on slab surfaces.

Beyond the physical details, this climb is embedded in a setting that channels Yosemite’s timeless appeal—granite walls rising from the valley floor, sun filtering through sparse pines, and the river murmuring far below. The slab’s smooth face glistens in afternoon light, inviting methodical movement that contrasts more aggressive vertical routes nearby. Because it is located within Yosemite National Park, the area draws visitors who seek routes that build technical slab skills amid iconic wilderness.

While the first pitch delivers a manageable yet mentally engaging experience, the follow-up second pitch is known for its exquisite rock quality paired with seriously runout sections, making it suitable only for seasoned climbers comfortable with minimal protection and bold moves. The route’s boldness comes with a gentle grace that reflects Yosemite’s classic granite ethos—technical, mental, and rewarding.

Preparations for Costa Rica (p1) should prioritize precise climbing shoes with solid friction and calm decision-making. Hydration is crucial as the approach and climb expose you to sun and limited shade. Approach trails from Parkline Slab favor lightweight packs to conserve agility. Timing climbs for morning or early afternoon ensures firm rock conditions before afternoon heat softens friction. Familiarity with runout slab climbing and comfort on 5.8 R terrain is advised, ensuring mental readiness for the route’s sparse protection and exposure.

The descent can be made via rappelling from the clean 2-bolt anchor, requiring standard sport rack gear. Climbers should double check anchors and rope management due to the slab’s angle and potential slippery surfaces. As always, Yosemite’s weather and crowds can add variables, so plan accordingly and respect seasonal conditions.

This climb is not beginner-friendly but offers a valuable stepping stone for those looking to deepen their slab skills in a legendary national park setting. Costa Rica (p1) combines delicate movement with strategic protection choices, delivering a climbing experience that sharpens technique and builds confidence a few slabs beyond the commonplace.