Mt Adams Loop is a navigation aid, not a safety device. It shows one route on a mountain where roughly four miles have no trail at all, several miles are on tribal land that is closed most of the year, and the river crossings change hour by hour. Carry a map and compass, know how to use them, and be prepared to turn around.
By using the app you agree to what follows. If you don't, delete it.
What the app is
It draws one 36-mile loop around Mount Adams, with the map and route data compiled in before it ships. It does not route you, it does not know any other trail, and it cannot tell you whether today is a good day to be out there.
The route is not authoritative
The line comes from OpenStreetMap trail geometry with elevation sampled from the USGS 10-metre digital elevation model. The annotations come from trip reports and forum posts written by other hikers. All of it can be wrong, out of date, or right for a different year than yours.
This matters most across the off-trail section. There is no trail there — the app draws two recorded lines, dashed, and says plainly that neither is authoritative, because published traces of that ground disagree with each other by up to 800 metres. Do not follow either one into terrain you cannot see the far side of.
Conditions change
Snow, melt, weather, fire closures and the state of the river crossings all change on timescales the app knows nothing about. A crossing described as an easy rock-hop in one trip report was a swim for somebody else on a different afternoon. Both accounts are in the app precisely because the disagreement is the information.
Permits and access are your responsibility
The eastern side of the route crosses Yakama Nation land. It is open for a limited season, on terms set annually, and entering without the required permit is trespass. Confirm access directly with Yakama tribal forestry before you go — nothing displayed in the app or on this site constitutes permission to be there. The same goes for any wilderness permit, parking pass or summit permit that applies to your trip.
Assumption of risk
Backcountry travel on a glaciated volcano carries a genuine risk of injury and death. You are responsible for your own decisions: your route, your turnaround time, your equipment, your party and your judgement about whether to cross a river or a snowfield. Use of the app does not transfer any part of that to anyone else.
No warranty
The app is provided "as is", without warranty of any kind, express or implied, including any implied warranties of merchantability, fitness for a particular purpose, accuracy, or non-infringement. It is not guaranteed to be uninterrupted, error-free, or available when you need it. Batteries die and devices break.
Limitation of liability
To the fullest extent permitted by law, the developer is not liable for any indirect, incidental, special, consequential or punitive damages, or for any loss of data, arising out of your use of or inability to use the app — including any injury or loss occurring in the backcountry. Where liability cannot be excluded, it is limited to the amount you paid for the app.
Nothing here limits liability for death or personal injury caused by negligence, or for fraud, where such a limitation is not permitted by law.
Licence
You get a personal, non-transferable licence to use the app on devices you own or control. Don't redistribute, resell or reverse-engineer it, except where the law says you may regardless of what this says.
Underlying data
Route geometry is derived from OpenStreetMap, © OpenStreetMap contributors, available under the Open Database Licence. Elevation and basemap imagery come from the U.S. Geological Survey National Map.
Governing law
These terms are governed by the laws of the State of Washington, USA, without regard to its conflict-of-laws rules.
Changes
These terms may be updated; the current version always lives at this address, with the date at the top.
Contact
Questions: the support page.