Data sources & attribution

OpenSkiMap

Resort boundaries, lift counts, run counts and run distances are derived fromOpenSkiMap, itself built onOpenStreetMap data. Both are licensed under the Open Database License (ODbL). Any derived database that incorporates this data is offered under the same terms.

Wikidata

Supplementary facts (elevation, official identifiers, historical notes) come fromWikidata, dedicated to the public domain underCC0.

OurAirports

Airport names, codes and locations come from OurAirports, released into the public domain.

GeoNames

City names and populations come from GeoNames, licensed under CC BY 4.0.

Terrain hero images

Resort pages without a licensed photo show a generated terrain visualization instead of a photograph. These are rendered from elevation data served by AWS's publicTerrain Tiles dataset (Terrarium-encoded tiles, originally produced by the now-retired Mapzen project), itself derived from NASA/USGS SRTM and other public elevation sources. The dataset's current maintainers ask only that its open, public-domain-style terms be respected; no per-image attribution is required, so no credit line appears on individual pages.

Resort pages with a real photo credit the photographer, license and source (Wikimedia Commons or Wikipedia) directly beneath the image, per that photo's own Creative Commons license.

Distances

All resort-to-city and resort-to-airport distances on this site are straight-line (haversine) distances, not drive times or road distances.