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Guide · GUIDE 42

Lost in the mountains: what Switzerland really recommends

Last reviewed on 17.07.2026

Stop as soon as the terrain no longer matches the map and return to the last surely known point – this is what the official J+S handbook teaches. The widespread «STOPP rule» is not a Swiss recommendation. In 2025, around 1,500 unhurt people were rescued from mountain emergencies, 84 percent of them blocked (CAS Mountain Emergency Statistics 2025).

Getting lost feels like a beginner's mistake. The figures tell a different story: the most common mountain emergency in Switzerland is not a fall, but blockage – people who are unhurt somewhere and can neither go forward nor back. In 2025, around 1,500 people were in this situation, 38 percent of all mountain rescue casualties; 84 percent of those rescued were blocked (CAS Mountain Emergency Statistics 2025). They had not fallen. They had lost contact with the map. This guide compiles what Swiss sources actually say – and what only looks like it.

The STOPP rule is not a Swiss recommendation

The STOPP rule (Stop – Think – Observe – Plan) circulates in German-speaking websites as a supposed official recommendation for when you are lost. It comes from the Anglo-American outdoor, hunting and scouting context.

It is not found on any Swiss primary source – CAS, bpa, Swiss trails or swisstopo. It is therefore not wrong, but it is not Swiss teaching, and nobody should present it as such.

Switzerland has no formally stated procedure for the case of «I am already lost». What it has are individual documented building blocks that achieve the same thing together – from official teaching materials and from trail experts. These are in the next section.

What do the CAS and J+S recommend when you lose your bearings?

These seven steps are not an invention or a translation of a foreign rule: each individual one is found as is in a Swiss primary source – in the official J+S handbook, from Swiss trails or from the CAS. Together they form the sequence of action that as a finished procedure does not exist here.

  1. Stop as soon as the situation and expectation diverge – J+S: «When deviations occur, stop, orient yourself, possibly return to the last known point.»
  2. First clarify your location, then the direction – J+S: «Whoever does not know where they are cannot say where they are going.»
  3. Return to the last surely known point, rather than guess forward – the only officially formulated reactive instruction
  4. If in doubt, turn back – Swiss trails: «take no risks, force nothing and turn back in time»
  5. Turn back while you still can – CAS: «If unexpected problems arise, you should turn back while you are still capable of doing so.»
  6. Deploy instruments before visibility is gone – J+S: «Deploy the instruments before you can no longer see anything (especially the compass).»
  7. Raise the alarm if you are blocked, rather than search further – that is exactly why rescue services deploy

What does «blockage» mean in the mountains?

The CAS defines it word for word: «Blockage refers to all emergencies in which mountain-goers are unable to continue or abandon their tour under their own power due to exhaustion, being overwhelmed, loss of equipment or other misfortune.»

The CAS describes those affected thus: «Very often those affected are unhurt.» And: «Most of them called rescue because they were blocked (84 percent). They were exhausted, had lost their way or dared neither forward nor back.»

That is the point: blockage is not a peripheral case and not a failure, but the statistical normal case of mountain rescue of the uninjured. If you are blocked, you do not have a behaviour problem – you have a location problem.

For beginners: The most dangerous moment is not when you realise you are wrong. It is the moment after – when you continue on because turning back feels like giving up.

Expert tip: Keep track of your location while walking («with your thumb on it», J+S) and compare actual against expected. Then the «last known point» is never more than a couple of minutes away – and turning back costs nothing. If you only realise after an hour that you are off course, you have lost that way back.

White-red-white does not automatically mean T3

The circulating tables that assign trail colours to specific T-grades are unofficial. In its 2023 revision of the hiking scale, the CAS deliberately removed the strict assignment: the categories are «no longer sharply delineated to individual T-grades, but flow into each other».

The CAS continues to name an approximation – with explicit caveat: «yellow trails are mostly in the T1/T2 range, white-red-white in the T2/T3 range, white-blue-white in the T4/T5 range – in practice, however, you often find deviations both below and above.»

Practically this means: the colour tells you what the path demands of you (standard SN 640 829a). The T-grade tells how difficult this route is. The two are related, but not by table. What matters is always the hardest section – and the scale only applies to favourable conditions: good visibility, dry terrain.

For beginners: stay on yellow-marked paths – the bpa campaign explicitly recommends this.

Expert tip: in wet, foggy or snowy conditions, a T3 route is no longer a T3 route. The scale assumes favourable conditions; conditions are not a detail, but half the assessment.

Widespread rules of thumb checked for accuracy (Switzerland)
Claim Is that correct? What is documented
«STOPP rule» is the Swiss recommendation for getting lost No Anglo-American rule of thumb; not found on any Swiss primary source. Swiss teaching: stop, orient, return to the last known point (J+S)
White-red-white means T3 No CAS abandoned the assignment in 2023: categories «flow into each other». Only approximation T2/T3 with explicit caveat
Rega can find me by my phone No Cell phone location only up to 2 hours after a call, in mountains sometimes dozens of kilometres inaccurate, not with all phones; no background tracking (Rega)
The most common mountain emergency is a fall No Most common emergency is blockage: 84 % of around 1,500 unhurt rescued in 2025 (CAS). For fatalities, falls dominate
A map is optional on mountain hiking trails No Standard SN 640 829a explicitly requires a topographic map for white-red-white marked trails
Triangulation is the Swiss technique No The official J+S handbook does not know the term. Swiss terminology: 3-point rule, azimuth, route sketch

Sources: CAS Mountain Emergency Statistics 2025 · CAS Hiking Scale (Issue 1.6.2023) · J+S Handbook Mountain Sports 30.905.1003 d (BASPO) · Standard SN 640 829a · Rega Questions and Answers. Status: July 2026.

Frequently asked questions

Does the STOPP rule apply in Switzerland?

It is not a Swiss recommendation. The rule (Stop – Think – Observe – Plan) comes from the Anglo-American region and is not found on any Swiss primary source – neither with the CAS nor with the bpa, Swiss trails or swisstopo. It is not factually wrong; the documented Swiss equivalent is in the J+S handbook: stop when deviations occur, orient yourself, if necessary return to the last known point.

Does white-red-white automatically mean T3?

No. In 2023, the CAS abandoned the fixed assignment of trail colour to T-grade – the categories «flow into each other». As an approximation, it names white-red-white in the T2/T3 range, explicitly with the caveat that you «often find deviations both above and below» in practice. The circulating assignment tables are unofficial.

Should I continue or stay if I am lost?

The documented Swiss line is: stop, clarify your location, if necessary return to the last surely known point – and if in doubt, turn back while you can still do so under your own power. Continuing in the hope that the path will be found again is precisely the way into blockage. If you can neither go forward nor back, you raise the alarm.

Is it embarrassing to call rescue if I am unhurt?

Statistically it is the normal case: in 2025, around 1,500 unhurt people were rescued from mountain emergencies – 38 percent of all those rescued, 84 percent of them due to blockage (CAS). The Rega rule of thumb for 1414 is not «injury», but whether immediate help from a rescue helicopter is needed.

Why can the Rega not simply find me by my phone?

Because they can only do so technically to a limited extent. According to Rega, cell phone location is only possible if a mountain emergency call was made within the last two hours; in the mountains it can deviate «by dozens of kilometres» and does not work with all phones. There is no background tracking. Your location must be actively transmitted.

Official sources