NH48 API
Open data, routes, and photo metadata for New Hampshire’s 48 four-thousand-foot peaks. Browse the catalog, explore White Mountain trails, discover long-distance hiking routes, and learn about alpine flora.
NH48 & Howker Ridge Info.
NH48 Catalog
Browse New Hampshire's 48 four-thousand-foot peaks with detailed elevation data, route information, and summit photos. Filter by difficulty, range, and completion status.
White Mountain Trails
Interactive map and trail finder for the White Mountain National Forest. Track completion progress, view trail details, and explore routes with real-time filtering.
Long Trails
Discover long-distance hiking trails across North America. View trail segments, elevation profiles, and route details for scenic thru-hikes and backpacking adventures.
Howker Plant Catalog
Explore alpine and subalpine plant observations from the Howker Ridge Trail, with species details, habitat notes, and photo references.
Howker Ridge Trail Info
Learn about the Howker Ridge Trail, including its history, elevation profiles, segments and points of interest.
PeakID Game
Match summit photos to the correct 4,000-footer names across eight rounds of drag-and-drop play.
Timed PeakID Game
Race the clock by matching falling summit photos to the correct NH48 peak names.
About NH48 and the datasets
About NH48 and the datasets
NH48.info is a volunteer‑run resource for New Hampshire’s 48 four‑thousand‑foot peaks and the wider White Mountain trail system. It is maintained as a public reference and archive, publishing open datasets, trail maps, elevation profiles, species observations and high‑resolution photos for hikers, naturalists and researchers. Because the content is curated in spare time, conditions and regulations may change. Please verify route status with official sources, and if you spot an error or omission, use the Send Edit to Author link to submit corrections.
Send Edit to AuthorNH48 Peak Catalog – Explore detailed entries for all 48 peaks with summit coordinates, route descriptions, difficulty grades, elevation and prominence data, trail exposure, range categorization and curated photo sets. Sort by elevation, prominence or trail exposure, filter by range (Presidential, Franconia Ridge, Twins & Bonds, Carter‑Moriah & Wildcats, Kinsman, Osceola & Tripyramids, etc.), and view results in grid or list format.
Range Catalog – Browse the NH48 peaks organized by their mountain range and compare statistics across ranges.
NH48 Photos – Browse high‑resolution images from the peaks and trails with alt text and metadata for research and inspiration.
PeakID Game – Match summit photos to the correct four‑thousand‑footer names across multiple rounds of drag‑and‑drop play.
Timed PeakID Game – Race the clock by matching falling summit photos to the correct peak names.
Jigsaw Puzzle – Solve jigsaw puzzles generated from NH48 summit photos at various difficulty levels.
White Mountain Trails Explorer – An interactive map and segment‑level database of official and unofficial trails across the White Mountain National Forest, with distance, elevation gain, permitted uses, surface type and trailhead coordinates.
Long Trails – Explore multi‑state hiking routes such as the Appalachian Trail and Pacific Crest Trail with segment data, elevation profiles and geospatial geometry.
Howker Ridge Plant Catalog – Document alpine and subalpine species along the Howker Ridge Trail with common and Latin names, habitat notes, bloom windows, elevation bands and photo references.
Howker Ridge Trail Info – Learn about the Howker Ridge Trail’s history, elevation profiles, segments and points of interest. See the Interactive Map and Plant Log Map.
Photo use: Images are offered for non‑commercial and educational use only; they remain the property of the site and may not be sold or printed without permission. For curated galleries and prints see NH48pics.com, and for a peak‑bagging tracker see NH48.app.
