Offline maps for thru-hikers
The map and the elevation profile on one screen, and the whole trail's topography on your phone. Made by a Thru-Hiker (Pez) for Thru-Hikers.
Download on the App Store Free · iPhone · iOS 26 and up · no account, no subscription3 trails 8 223 km of line Works in airplane mode Nothing collected
The real app, on the Great Divide Trail, around Wolverine Pass.
A trail's whole topographic map downloads once and works with the phone in airplane mode. No signal, no server, no account. Contours, hillshading, ground cover, huts, water, towns and the roads you walk in on.
More are being added.
Every waypoint comes from the trail's own association or from open data. I can't hand-verify all of them, and no water source is truly reliable until someone who was there says so. If you're out and something's wrong, tell me and I'll fix it.
Corridor is a planning and navigation aid, not a substitute for a paper map, a compass, or the trail organisation's own current notices.
— Pez, who walked the CDT, the PCT, the GDT and Te Araroa, and built this because he wanted one app that answered the questions he actually had out there.