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 Alps 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.
Note: For technical reasons, the model is currently limited to the area within 35km of the takeoff site. This limit might be reached for very high takeoff sites (e.g. 4000m) and a large glide ratio.