You have reached base camp. You have climbed Kala Patthar in the dark and watched the light come onto Everest. And now the map says three more days of walking, downhill, on the same legs.
A very large proportion of trekkers who reach Gorakshep fly out from it. Here is why, and when it is the wrong call.
Downhill is not the easy part
Everyone assumes the descent is the reward. It is not. Descending loads the knees in a way that climbing does not, the Khumbu trails are rough and stepped rather than smooth, and you are doing it after two weeks of accumulated fatigue at altitude.
Most of the injuries we see on the return leg are knees, ankles and the kind of tendon problems that arrive on day two of descending and get worse.
The three days you are buying back
Gorakshep to Lobuche, Lobuche to Pheriche or Pangboche, then down to Namche and Lukla. Three days minimum, four if you are tired, and then the Lukla flight at the end regardless.
The Gorakshep to Lukla helicopter takes twenty-five minutes.
The case for flying
Time. If your international flight is in five days and you have already lost two to weather, the arithmetic makes the decision for you.
The body. If something already hurts, three days of descending will make it worse, not better.
Altitude. If someone in the group is not well at 5,164 metres, getting down fast is treatment rather than convenience.
The Lukla queue. Flying to Lukla still means waiting for a Lukla departure. Flying direct to Kathmandu skips it entirely.
The case for walking
You will see things you flew over. The valley looks completely different going down, in different light, without the weight of the objective ahead of you.
Descent is how you recover. Walking down through Pheriche and Namche re-oxygenates you gradually. Most people feel dramatically better by Tengboche.
Cost. Three more nights in teahouses is a fraction of the flight.
The end of a trek matters. Arriving back in Lukla on foot, having walked the whole thing, is a different experience from arriving in a helicopter. Some people care about that a great deal.
The compromise almost nobody considers
Walk down to Lobuche or Pheriche, then fly.
You get the best of the descent, the part where you can breathe again. You avoid the hardest stretch. And because those pads are lower, the flight is cheaper and the aircraft can carry your whole group in one lift instead of two. Walking two hours down from Gorakshep to Lobuche will often save you money on the seat.
What we would say
If something hurts, fly. If you are out of days, fly. If you are simply tired and have the time, walk to Pheriche and then decide. You will make a better decision at 4,371 metres than at 5,164, on every level.