5 organizations sharing all their trails and paths
Download it once over wifi. After that the map works with no bars and no data plan — the way the trail actually is. Free, open source, and built to hand back to the communities that maintain the trail.
This is a beta, and worth treating as one. It has not been field-tested across the whole trail. Carry a paper map and a compass, tell someone your plan, and don't make a navigation decision you couldn't make without a phone.
It works where there is no signal
The whole point. Download the trail once, in town: from then on the topo map, the elevation profile and every waypoint live on the phone itself, and airplane mode changes nothing. Fifty miles from the nearest bar of signal is exactly where this app is meant to be.
Where the data comes from matters, so the app never flattens it: ATC facility data is labelled as theirs, water sources drawn from OpenStreetMap and the National Hydrography Dataset are marked approximate and unverified — on every single one.
What works today, and what doesn't yet
A trail app owes you the truth about itself above everything else. The honest state, kept current:
- The full topo map offline, with the trail drawn by blaze colour
- Your position and mile marker along the trail
- Shelters, water, campsites and resupply — searchable with no signal
- The elevation profile, and the climb ahead with an honest ≈time
- Routes and multi-day plans, built and kept on your phone
- Reporting a problem, saved on your phone, no account needed
- Sending those reports onward — the service that receives them is not deployed yet, so they queue on your phone until it is
- App-store versions for iOS and Android — in progress
Get the app
On the phone you'll carry — with the whole trail downloaded before you leave town, and tested in airplane mode before you go.
Set your phone up →Support the trail
Where money goes, what will never be behind a paywall, and the giving that reaches the ground today.
How this is funded →Get involved
Report conditions from the trail inside the app, or bring an issue or a pull request — the whole project is open source.
Ways to help →Do you maintain these trails?
If your club or agency keeps a trail on this map, the data can come from you instead of from us guessing. Publish your own sections, keep your own hikers, and we will draw them.
Add your trail data →