Altigraphs blends outside data providers with what riders contribute directly. This page lists where each piece of a climb's page actually comes from, and what credit is owed for it.
MapTiler is the primary provider behind the maps, address search, and elevation lookups used throughout the site. Mapbox is used narrowly for one thing MapTiler doesn't offer — road-snapping when drawing a route from scratch in the add-climb wizard.
Each climb segment's surface (paved, unpaved, cobblestone) is detected automatically from OpenStreetMap data, fetched through a single OpenRouteService Directions request per import or route edit.
Country, region, and province boundaries come from geoBoundaries. Mountain range boundaries are matched from OpenStreetMap via Nominatim; a handful of ranges Nominatim can't resolve are matched instead from the GMBA Mountain Inventory.
The "At the summit right now" card on a climb's page pulls current conditions from Open-Meteo, cached briefly rather than fetched on every page view.
Every climb's stats, notes, and photos are contributed and corrected by riders, and published under a CC BY-SA 4.0 license, credited to the usernames who built it.
Spot a data source that should be credited differently, or a licensing question? Contact us