Researcher Released Pacific Crest Trail Sound Map
Hikers can now explore the auditory landscape of the 2,600-mile trail through a new interactive collection.
Updated on Sept. 27, 2026 in Hiking
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Bioacoustic researcher Tom Kelly has published an online sound map featuring 200 recordings captured across the 2,600-mile Pacific Crest Trail. The collection provides a unique auditory archive of the wilderness experience for those interested in the trail's natural soundscape.
Why it matters
This map offers a novel way for outdoor enthusiasts to connect with distant natural environments and gain a deeper appreciation for the acoustic health of protected wilderness areas.
The collection includes 200 field recordings, some exceeding five minutes in duration, derived from a total library of 350 captures. These recordings were gathered during a thru-hike and represent the verified acoustic profile of the trail, though their utility in large-scale ecological study is currently being explored.
The players
Tom Kelly
A 41-year-old bioacoustic researcher who specializes in documenting natural soundscapes.
Pacific Crest Trail Association
The nonprofit organization dedicated to protecting and maintaining the Pacific Crest Trail.
The details
Kelly captured these sounds using a field recorder paired with two omnidirectional microphones, intentionally omitting human and aircraft noise to isolate natural elements like wind, water, and wildlife. He spent three years post-hike editing these segments to ensure they accurately represent the environment's distinct sonic qualities before plotting them on an interactive interface.
Timeline
2023: Tom Kelly completed his thru-hike of the Pacific Crest Trail.
September 2026: The interactive sound map was published online.
Health Landscape
This project reflects a growing interest in acoustic ecology, which studies the relationship between living organisms and their sound environments. It follows a trend of using citizen-science data to document the state of wilderness soundscapes, an effort that parallels formal initiatives to preserve natural quiet.
Engaging with recordings of natural environments can be a restorative practice for those unable to visit wilderness areas in person. If you are interested in using nature-based soundscapes for stress management, it is worth discussing the benefits of auditory therapy with your physician.
The takeaway
The sound map provides a digital window into the Pacific Crest Trail's diverse natural acoustics, highlighting the value of preserving quiet wilderness spaces. Consider using these soundscapes as a tool for mindfulness and a way to plan your next outdoor excursion.
Further reading
Explore more ways to engage with nature in our Hiking section.
Source note: This article includes information reported by San Francisco Chronicle.
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