What happens if one person in your Rinjani trekking group cannot continue while everyone else wants to summit?

The guide stops the party, makes a safety assessment, and the group splits, and how well that goes depends almost entirely on what was agreed before the trek started. A hiker who cannot continue at Pos 3, at the rim, or on the summit slope is a routine scenario that every experienced crew has handled, so the question is not whether it can be managed but who escorts the person down and who stays with the summit party.

At a well-run operator, the mechanics are established practice. The guide assesses whether the withdrawing hiker can descend with support, a porter can be reassigned to help carry their pack, and the descent follows the trail toward the exit gate. One published operator account states plainly that turning back itself carries no additional fee and that the return transfer to your hotel is included, which is the standard you should demand. The remaining party continues with the guide, possibly re-planning the itinerary around the lost time.

The costs that can appear sit elsewhere. If a second credentialed guide must be sent up or added to the continuing group, that is staffing, and wages may or may not be included. Some operators state that unused services are not partially refunded once the trek has departed, and deposits are commonly nonrefundable, one published policy holding 25 percent. So separate the three questions before you pay: who escorts, who pays for any extra crew, and what happens to the money. A good operator answers all three in writing without flinching.

Ask it this way: if one of us stops at Pos 3, which named guide walks down with them, who stays with the rest of us, how do the two parts communicate when phone coverage fails on the mountain, and is any of that an extra charge. We answer that question in detail on our treks, brief the plan on the first morning, and treat the slow member’s safety as the whole group’s responsibility rather than an individual misfortune. On a mountain with patchy signal and split parties, the plan made at the trailhead is worth more than any amount of courage at 3,000 meters.