The computational resources needed for the model calculation grow rapidly with the covered (flyable) area. Therefore the model is limited to an area within 20 km of the takeoff site.
hikeandfly.org (formerly parange.ch) is a hike & fly planer for Paragliders.
The tool calculates the region a paraglider can reach in theory by gliding from a chosen starting location and elevation. The calculation rests on the assumption of these conditions:
The tool is meant to supplement flight preparations especially for hike & fly type trips in the mountains in addition to things like the weather forecast, aeronautical charts, and common sense.
The tool currently covers the earth's land surface except Antarctica, Greenland, Iceland, and a few remote islands. If you are missing coverage for a certain area or if you find some strange results please contact me.
The digital elevation model is based on 3 arc second data from Jonathan de Ferranti's View Finder Panoramas-Project.