Why Altigraphs exists
Most climb data online is guessed, extrapolated from a single GPS track, or copied from one site to the next without anyone checking it against the road. Altigraphs starts from the opposite assumption — a climb's profile should come from someone who actually rode it, corrected by the next person who spots something wrong. That's why every gradient, elevation figure, and practical note here is credited to a rider, and never fixed forever.
How the data gets here
Anyone with an account can add a climb, either by uploading a GPX file or by drawing the route on the map, and Altigraphs works out the elevation profile, gradient sectors, and category from that. Adding photos, practical notes, and corrections works the same way — nothing is locked to one contributor, and edits are kept in the climb's history rather than silently overwritten. All of it is published under a CC BY-SA 4.0 license, credited to the usernames who built it.
Who's behind it
Altigraphs is a small, independently run project, not a company with an ads or data-selling business to fund. There's no tracking or advertising here — see the Privacy Policy for exactly what we do and don't collect. If you ride, measure, or just love a good climb, you're the intended audience.
Curious how contributions are licensed, or what data we collect? Terms of Use · Privacy Policy