マナスル ツム バレー トレッキングでは、高山病が大きなリスクになりますか?

迅速な答え

Altitude sickness is a major risk on the Manaslu Tsum Valley Trek. The 16 to 21 day itinerary spends 6 nights above 4,000 m and crosses the 5,106 m Larkya La pass. Mild AMS rates run 12 to 18 percent on fast itineraries versus 3 to 6 percent on standard itineraries with 2 acclimatization days at Samagaon at 3,520 m and Samdo at 3,860 m. Carry Diamox at 125 mg twice daily above 3,500 m and a pulse oximeter for twice daily checks.

詳細な内訳

The route starts at Soti Khola at 730 m and climbs the Budhi Gandaki valley for 8 days to Samagaon at 3,520 m on the Manaslu Circuit section. The Tsum Valley branch splits at Lokpa at 2,040 m and climbs to Mu Gompa at 3,700 m over 4 days. Combined Manaslu Tsum itineraries spend 5 to 7 days in the Tsum Valley before returning to the main Manaslu route at Deng or Namrung.

The altitude profile shows 5,700 m of total ascent from Soti Khola to Larkya La at 5,106 m, well above the recommended 300 to 500 m per night sleeping gain above 3,000 m. The 3 standard acclimatization days are at Namrung at 2,630 m, Samagaon at 3,520 m, and Samdo at 3,860 m. Day 14 crosses Larkya La at 5,106 m with a 1,400 m descent to Bimthang at 3,720 m in a single day, the most demanding altitude exposure of the trek.

コスト/コンポーネントの内訳

答えに影響するもの

Itinerary speed is the biggest factor. The 16 day fast itinerary skips the Samagaon acclimatization day and triggers mild AMS in 12 to 18 percent of trekkers. The 21 day standard itinerary with 3 acclimatization days keeps AMS rates at 3 to 6 percent. Crossing Larkya La at 5,106 m after a 3,860 m Samdo sleep is the second factor because the 1,246 m ascent exceeds the 500 m daily gain rule.

Individual susceptibility is the third factor. Trekkers with prior altitude sickness have a 60 to 70 percent recurrence rate. Hydration is the fourth factor. Above 4,000 m the body loses 1.5 to 2 L of water per day, and trekkers drinking 3 to 4 L per day see 20 to 30 percent lower AMS rates.

予約のヒント

Book the 18 to 21 day itinerary with 3 acclimatization days at Namrung, Samagaon, and Samdo. Carry Diamox at 125 mg twice daily from Namrung onwards. Carry a pulse oximeter and check blood oxygen saturation twice daily. Readings below 82 percent at Samdo mean you should descend or add a rest day. Sleep with the head end of the bed raised 10 to 15 cm to reduce nighttime headache.

代替案との比較

The Manaslu Circuit at 5,106 m needs 2 acclimatization days on a 14 to 18 day itinerary with mild AMS rates of 4 to 8 percent. The Annapurna Circuit at 5,416 m Thorong La needs 2 acclimatization days on a 14 to 18 day itinerary with 6 to 10 percent mild AMS. The Three Passes Trek at 5,535 m Kongma La needs 3 acclimatization days on an 18 to 21 day itinerary with 5 to 9 percent mild AMS.

避けるべきよくある間違い

Trekkers often skip the Samagaon acclimatization day to save USD 100 to USD 150 and walk straight to Samdo at 3,860 m. The 1,700 m ascent from 2,630 m at Namrung to 3,860 m at Samdo in 2 days triggers moderate AMS in 12 to 18 percent of cases.

A second mistake is crossing Larkya La in poor weather. Snowfall above 4,500 m reduces visibility to 5 to 10 m and 4 to 6 trekkers per year require helicopter evacuation. Wait 1 day at Samdo for clear weather.

フェイク

Is altitude sickness a major risk on the Manaslu Tsum Valley Trek? Yes. The 16 to 21 day itinerary spends 6 nights above 4,000 m and crosses the 5,106 m Larkya La. Mild AMS rates run 12 to 18 percent on fast itineraries versus 3 to 6 percent on standard itineraries with acclimatization.

How many acclimatization days are needed? Three on the standard 18 to 21 day itinerary, at Namrung at 2,630 m, Samagaon at 3,520 m, and Samdo at 3,860 m. Add a fourth at Mu Gompa at 3,700 m on the Tsum Valley branch.

Do I need Diamox for Manaslu Tsum? Recommended above 3,500 m at 125 mg twice daily from Namrung onwards. Side effects include tingling in fingers and increased urination.

What is the highest sleeping altitude? Samdo at 3,860 m on night 13. Day 14 crosses Larkya La at 5,106 m with a 1,400 m descent to Bimthang at 3,720 m.

まとめ

Altitude sickness is a major risk on the Manaslu Tsum Valley Trek because the route spends 6 nights above 4,000 m and crosses the 5,106 m Larkya La. Carry Diamox, plan 3 acclimatization days at Namrung, Samagaon, and Samdo, and book the 18 to 21 day itinerary for AMS rates of 3 to 6 percent.

結論

Altitude sickness is a real risk on the Manaslu Tsum Valley Trek. Plan 3 acclimatization days, carry Diamox and a pulse oximeter, and avoid the 16 day fast itinerary. Wait 1 day at Samdo for clear Larkya La weather and book evacuation insurance covering USD 5,000 to USD 8,000 in helicopter costs.