NH48 API Open Data
NH48 Datasets
Explore our catalogue of open data covering New Hampshire’s 4,000-foot peaks, White Mountain National Forest trails, alpine plant catalogs, and the major long-distance hiking routes of North America.
Each dataset is pre-rendered and downloadable, making it easy for search engines and mapping tools to index and use.
Peak metadata
NH48 Peaks Dataset
Comprehensive data for all 48 four-thousand-foot peaks of New Hampshire, including coordinates, elevation, prominence, trailhead details, markers, and historical notes.
- GeoJSON geometries for each peak
- Summit elevation, prominence and ridgeline connectivity
- Trailhead and parking locations
- Trail difficulty and distance statistics
Trail network
White Mountain Trails Dataset
A fully attributed trail network for the White Mountain National Forest, including distances, elevation profiles, surfaces, permitted uses, and connecting routes.
- Segment-level GeoJSON with mileages and elevation gain/loss
- Trail classifications (blazed vs unblazed, maintained vs abandoned)
- Connections to trailheads and other trail systems
- Attribution of difficulty, scenic value, and seasonality
Alpine flora
Howker Ridge Plant Catalog Dataset
Species observations and notes from the Howker Ridge Trail, including habitats, seasonal tags, and photo references for alpine and subalpine plants.
- Common and scientific names with habitat tags
- Elevation ranges, bloom timing, and field notes
- Photo references and contributor credits
- Search-friendly JSON for plant catalog tooling
Long-distance routes
Long Trails Dataset
Structured data for major long-distance hiking routes, from the Appalachian Trail and Pacific Crest Trail to regional traverses like the Arizona Trail.
- GeoJSON-like trail geometries suitable for maps and GIS workflows
- Segment metadata including names, ordering, and distance summaries
- Dedicated exports for each marquee route plus combined catalogs
How to use these datasets
- Display peaks, trails, and thru-hikes on interactive maps and dashboards
- Perform mileage rollups and route planning using combined exports
- Cache the JSON locally for offline hiking applications
- Integrate the data into GIS software for analysis and overlays