Treadentials App coming soon

Sources and licences

Every card names the data it draws on, free or not. Here is the full list.

Map data

© OpenStreetMap contributors

Roads, trails, water, land use, trail ratings and surfaces come from OpenStreetMap, available under the Open Database Licence (ODbL) 1.0. See openstreetmap.org/copyright. Thank you to everyone who maps.

Elevation

Copernicus GLO-30

Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved.

The organisations in charge of the Copernicus programme by law or by delegation do not incur any liability for any use of the Copernicus WorldDEM-30. In other words: the European Union, ESA, DLR e.V. and Airbus Defence and Space GmbH accept no liability for any use of the Copernicus DEM, or of anything made from it, including the pictures Treadentials draws.

The Copernicus DEM is provided under the Copernicus DEM licence. Anyone who receives a picture made from it is bound by the same terms: keep its notice with it.

USGS 3DEP

Elevation: USGS 3D Elevation Program (3DEP).

Public domain, credited by courtesy. Some of the sample cards on this site use its 10 m heights. In the app, terrain is Copernicus GLO-30 for now; 3DEP joins it for the United States later.

The drawing

Cards are drawn by reymaps, our own map engine. The pictures it makes are plain SVG: no scripts and no outside links, so the map sources stay inside the file.

Trail ratings are shown with the familiar green, blue and black shapes. They come from OpenStreetMap’s mountain bike tags, which mappers set; they aren’t an official rating from any trail body.

The sample cards

Some cards on this site were drawn from planned routes, used with their owner’s permission. The others follow well-known public courses, traced along OpenStreetMap; they aren’t anyone’s recorded activity. All the titles are ours, and the dates, times and speeds on the cards are examples. No event is named on a card, and no event or its organiser has anything to do with Treadentials.

This site

  • Built with a small script of our own, on Node.js (MIT).
  • Served by Cloudflare.
  • Fonts: your device’s own. Nothing is loaded from anywhere else.
  • Icons and the logo: ours.