The short version: three of the most asked questions, answered in a line each. The rest of the page goes into detail.
- How fast should I gain height on Nar Phu? Above about 3,000 m, aim for an average of no more than 300 to 500 m of sleeping altitude gain per day.
- Why is the Kang La section riskier for altitude? Because the trail rises from about 2,600 m at Koto to about 4,100 m at Phu in four days, then goes above 5,300 m, with a big gain and a long descent.
- Which symptoms mean I must descend? A headache that gets worse, vomiting, loss of coordination, confusion, a wet cough or breathlessness at rest are serious signs that may suggest cerebral or pulmonary oedema.
How fast should I gain height on Nar Phu?
Above about 3,000 m, aim for an average of no more than 300 to 500 m of sleeping altitude gain per day. Take a rest day every 1,000 m of net gain, or whenever anyone feels unwell. Climb high and sleep low where possible.
Why is the Kang La section riskier for altitude?
Because the trail rises from about 2,600 m at Koto to about 4,100 m at Phu in four days, then goes above 5,300 m, with a big gain and a long descent. Help is also far away, as the nearest basic health post is at Manang.
Which symptoms mean I must descend?
A headache that gets worse, vomiting, loss of coordination, confusion, a wet cough or breathlessness at rest are serious signs that may suggest cerebral or pulmonary oedema. They need immediate descent and medical help. Never ascend with symptoms.
What do I do about a mild altitude headache?
Mild symptoms feel like a hangover, with headache, poor sleep, nausea and tiredness. Rest at the same height or go down, and drink fluids. They should ease within a day. If they do not, descend instead of continuing.
Is the water safe to drink on Nar Phu?
Tap water is not safe untreated. Use purification tablets, a filter or boiled water from the lodge. Plastic bottles are discouraged in the conservation area, so bring a refillable bottle. Electrolyte tablets can make treated water easier to drink.
When should we turn back at the Kang La?
Fresh snow on the trail can make the pass dangerous, and a late start is risky, so guides start around 3:30 to 5:00 a.m. Follow your guide's call and be ready to turn back. A headlamp with spare batteries is a safety item.
Is the Kang La riskier than Thorong La?
The heights are similar, with Kang La at about 5,320 m and Thorong La about 5,416 m. The difference is support: Thorong La has lodges at both ends and heavy traffic, while Kang La has neither, so help is hours away if you slow down.
