Part 2 of our Lost Person Behaviour series
Lost people aren’t random.
When humans become lost in the wilderness, we behave in surprisingly predictable ways. We make similar mistakes, follow similar terrain and use similar strategies to try to find our way out. (If you want to dive into it, download the Lost Person Behavior app)
Search and Rescue has statistics for this. Lots of them.
The Lost Person Behaviour hiker profile we're using contains 2,242 incidents. Of those missing hikers, 68% were lost, 16% overdue, 7% had suffered trauma, 4% were stranded and 2% had a medical problem.
These aren’t rules. They’re probabilities gathered from previous searches, and they help Search Managers answer one critical question: Where should we look first?
Stanislav Volo’s six days on Mount Habrich are a fascinating real-world example.
IT OFTEN STARTS WITH ONE WRONG DECISION
Hikers are incredibly trail-oriented. When we become lost, it commonly happens where the route becomes ambiguous: trail junctions, obscure trails, social or game trails, sharp turns and heads of drainages.
In fact, 56% of lost-hiker cases involve an error at a decision point.
Stanislav reached the top of the climbing trail on Habrich and mistakenly descended the north side instead of returning via Al’s Habrich Trail.
A navigation error in a whiteout changed everything.
THEN WE TRY TO FIX IT
Lost people generally don’t wander randomly. We form hypotheses: Maybe the trail is ahead. Maybe I recognize that ridge. Maybe if I go downhill I’ll reach a road. Maybe that sound is the highway.
Stanislav heard what he believed was Highway 99 and travelled toward it.
It wasn’t Highway 99. It was pipeline construction on the other side of the mountain.
His reasoning made sense based on what he thought he knew, but every step based on that incorrect assumption moved him farther from his intended route.
WHICH WAY DO LOST HIKERS GO?
In mountainous temperate terrain, missing hikers were found 52% downhill, 32% uphill and 16% at approximately the same elevation.
Going downhill is tempting. It feels intuitive: civilization is below me, so eventually I’ll hit a road, river or town.
Stanislav went downhill.
But this is Lost Person Behaviour, not survival advice.
In our Coast Mountain terrain, blindly descending can be extremely dangerous. An innocent-looking slope or drainage can funnel you into waterfalls, cliffs, canyons and steep gullies that become increasingly difficult or impossible to reverse.
We have responded to dozens of incidents involving people who became lost, descended and ended up cliffed out, trapped or seriously injured. We have also responded to fatalities from falls in exactly this kind of terrain.
Stanislav descended toward what he believed was Highway 99, entered increasingly difficult terrain and eventually fell, suffering injuries that dramatically changed his ability to move.
We know the urge to “just go downhill” is powerful. Resist it. If you don’t confidently know where your descent leads, continuing downhill can turn a navigation problem into a technical rescue — or something much worse.
Once you recognize that you are genuinely lost, STOP. Stay put, make yourself visible, preserve your resources and call for help if you can.
The 52% statistic doesn’t tell hikers to go downhill. It tells Search Managers to expect that many lost hikers will.
HOW LONG DO LOST HIKERS KEEP MOVING?
We sometimes imagine a missing hiker continuously walking farther away. The statistics tell a different story.
For hikers in temperate environments, 25% stop travelling immediately, 50% by about 3 hours, 75% by 6 hours and 95% by approximately 14 hours.
Darkness, exhaustion, terrain, weather, injury or finding shelter can all stop someone’s movement.
Stanislav’s fall changed his behaviour completely. He had a head injury, fractured heel and injured wrist. A mobile lost hiker had become an injured, mobility-limited subject. He found shelter near water and remained there while his heel recovered.
Days later, his circumstances changed again. His heel improved enough that he could move, and eventually he reached the Indian River FSR.
HOW FAR AWAY SHOULD WE LOOK?
For hikers in mountainous temperate environments, 50% are found within roughly 3 km of the Initial Planning Point (IPP) — the point from which we begin planning the search.
But distance can grow remarkably quickly. A person travelling at 3 km/h can cover 3 km in one hour, 9 km in three hours and 18 km in six hours. Importantly, that doesn't create just a longer line on a map - it's a 360 degree circle. If we don't know which direction you travelled, the potential area where you could be expands dramatically with every hour.
Now imagine someone has been missing for six days.
Of course, nobody walks continuously for six days. Terrain, darkness, sleep, injury and shelter all limit movement, and Lost Person Behaviour statistics help us estimate those probabilities. But from a Search Manager's perspective, the possible search area can become enormous very quickly.
This is one of the reasons we tell lost hikers to STOP.
If you know where you are and can safely retrace your route, that's different. But once you are genuinely lost and no longer know which direction leads to safety, continuing to move can take you farther from your last known location, into more dangerous terrain, and make the area SAR needs to consider much larger.
Staying put doesn't just conserve your energy and reduce your chances of becoming injured. It helps us find you.
Search Managers combine these statistics with the intended route, last known location, terrain, trails, decision points, drainages, cliffs, roads, cell information and every clue we can find. As new information arrives, those probabilities change.
THIS IS LOST PERSON BEHAVIOUR
Look at Stanislav’s journey through that lens. He made an error at a decision point. He tried to reorient himself using what he believed was the sound of a highway. He travelled downhill, entered a drainage and became injured. His mobility collapsed, he sheltered near water, then became mobile again when his condition improved.
That sequence is unique to Stanislav, but the individual behaviours within it are patterns we see repeatedly in missing-person data.
Search and Rescue isn’t simply searching a mountain. We’re trying to predict what one particular human being will do next.