What to do when a group member becomes lost hiking

Responding calmly and decisively when someone is unaccounted for

A missing or unaccounted-for group member is a serious situation that requires calm, deliberate action. Panic or rushed decisions often escalate the problem. This guide explains how to respond when a member becomes lost, focusing on immediate actions, communication, and decision-making that prioritise the safety of both the individual and the remaining group.

What to do immediately

If you realise a group member is missing, act early and deliberately:

• Stop the group: Do not continue walking while attempting to resolve the situation.
• Confirm who is missing: Conduct a formal headcount to identify exactly who is unaccounted for.
• Establish the Last Known Point (LKP): Confirm exactly where and when the person was last seen.
• Attempt contact: Try calling and sending a text message. A text may get through in areas of low reception where a voice call fails.
• Use a whistle: Use regular, loud whistle blasts to signal. This carries much further than the human voice.

Establish the facts

Avoid assumptions. Base your decisions only on confirmed information. Determine the missing person’s likely intentions—were they stopping for a photo, a toilet break, or were they struggling with pace? Understanding their physical and mental state at the Last Known Point helps determine the urgency of the response.

Search protocols and group safety

Do not split the group unnecessarily. Splitting a party to search without a clear plan often results in additional members becoming separated. If a backtrack is required, it should be done only by two experienced hikers who remain in constant communication with the main group. Any search should be time-limited (e.g., 15–30 minutes) and the searchers must return to the main group if the person is not found.

While managing the search, do not neglect the remaining group. Ensure they remain sheltered, warm, and hydrated. The guide on how to keep yourself safe on a group walk explains why individual safety is critical during an incident.

When to escalate: Calling 000

If initial communication and a brief search fail, or if daylight is fading and weather is deteriorating, escalate immediately. In Australia, call 000 and ask for Police. Be prepared to provide the following information:

• Location: Coordinates or clear landmarks and the Last Known Point.
• The Missing Person: Name, age, fitness level, and any known medical conditions.
• Equipment: What gear, food, and water they are carrying, and the colour of their clothing/pack.
• Group Status: Your current location, group size, and your plan for the next hour.

If you have a Personal Locator Beacon (PLB) and believe there is a genuine risk to life, activate it without delay. Do not wait for conditions to become dire before seeking help as search and rescue teams can take time to mobilise.

Review and Prevention

Once the situation is resolved, review the contributors to the separation. Often, the cause is a pace mismatch or a failure to regroup at junctions. Refer to our guide on keeping your hiking group together to implement stronger on-trail protocols for future walks.

In summary

Early recognition and calm action are critical when a hiker goes missing. Stop, regroup, confirm the facts, and avoid unnecessary movement. Clear communication and timely escalation to emergency services are the best ways to ensure a safe outcome for everyone involved.

Explore related guides

• Plan your hike like your life depends on it
• Trip Intentions and Rescue Planning for Hikers
• Keeping Kids Safe on the Trail
• PLB or Satellite Communicator?
• What Happens After You Activate a Personal Locator Beacon
• The Stages of Search and Rescue in Australia
• Signalling for Help When Lost or Injured on a Hike
• A Practical Guide to Survival Priorities
• What to do if you get lost hiking in Australia
• What to do when a group member becomes lost
• What to do if a child becomes separated on a hike