When should you worry if someone is late back from hiking?
Day hikes run long all the time: slower climbs, long lunch breaks, a view worth waiting for. An hour late in daylight is common and usually fine. Worry sooner if sunset is close and they had no headlamp, if the weather has turned, or if the agreed call-by time has passed. The National Park Service advises hikers to tell their contact to alert authorities if they aren't back by the expected time, so once that time passes, call 911.
A calm plan for the person at home
01Know the difference between the return time and the call-by time
A good hiking plan has two times. The expected finish, and a later call-by time, maybe two hours after, when you stop waiting and call for help. If they only gave you one time, pick your own buffer based on daylight and how remote the trail is.
02Expect the live link to go quiet on the trail
Many trails have patchy or no cell signal, so the live link often goes stale at the last place with coverage, sometimes the trailhead or a ridge. The last known location and the route line stay on the map, and the page shows how long ago that update came in. That is normal. What matters is whether it starts updating again as they come back into signal near the end of the hike. Our explainer on cell dead zones covers why.
03Check the obvious things first
Call and message them. Check whether they posted anything or messaged a friend. If you know the trailhead, a ranger station or a friend nearby may be able to see whether the car is still in the lot.
04Call 911 at the call-by time, not later
In the United States, 911 connects you to the agency that runs searches in that area, often the county sheriff. Give the hiker's name and age, the trailhead, the route they planned, their car, what they wore and carried (headlamp, jacket, water), any medical conditions, and the last point on the live link with the time it was recorded. Our guide on when to call 911 if someone is overdue lists what dispatchers ask.
05Stay by your phone
Once you have reported them, keep your line free. Searchers may call you with questions, and the hiker may call you first when they reach signal. Don't drive to the trailhead and start searching the trail yourself unless the search team asks you to.
Related questions
Will I get in trouble for calling too early?
No. Search teams would much rather be told early and stood down when the hiker walks out than be told late. If they turn up, call back to cancel. Getting dark with no light and no answer is enough reason to call.
What if they said 'back this afternoon' and nothing more specific?
Then your call-by time is roughly sunset. Once it is dark and they haven't made contact, start with calls and a check of the live link, then call 911. Next time, ask for a real time and trail name; the safety contact guide explains how to ask without nagging.
Does a missed return time alert me automatically?
It can. If the hiker set a return time in Holler and hasn't checked in five minutes after it, you get an overdue alert from Holler's server, even if their phone is off or out of signal. The alert shows the last known location.
The dot hasn't moved in two hours but it's still light. Is that bad?
Not necessarily. On a trail, a frozen dot usually means no signal. Compare the last update with the route: if it froze near the start, they may simply be deep in the hike. Use your call-by time, not the frozen dot, to decide when to call.
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Sources, checked September 2026: National Park Service: Hike Smart (leave a trip plan), National Park Service: Trip Planning Guide.
More safety answers, or see the safety guides.