Corridor — a thru-hiking app for one hiker, one trail at a time
Email beiserjohannes@gmail.com. One person reads it. A comment or water report that should not be there is looked at within 24 hours; anything else usually within a few days. Say which trail you are on and roughly which kilometre, and include a screenshot if something looks wrong on the map.
The map is blank. The trail's map is a separate download. Tap the trail's name at the top of the app and find its row in the list — it will say whether the map is present, still downloading, or failed. Downloads continue while the app is closed.
Can I use it without a signal? Yes. That is the point. Once a trail's map has downloaded, everything works with the phone in airplane mode. There is no server to reach.
Something on the map is wrong. Most of the map comes from OpenStreetMap and most of the trail's own line comes from the trail organisation's published track. If a hut, a water source or a path is wrong, tell me where and I will look at it for the next update.
A water source was dry. Water is a mapper's best guess, and on some trails it carries hikers' own reports. Treat every source as unconfirmed and carry accordingly.
Which trails are there? The Appalachian Trail, the Pacific Crest Trail, the Continental Divide Trail, the Great Divide Trail, the Arizona Trail, Te Araroa and the Haute Randonnée Pyrénéenne. More are being added.
Corridor is a planning and navigation aid, not a substitute for a paper map, a compass, or the trail organisation's own current notices. River levels, closures and ferry timetables change; always check the official source before you commit to a crossing.