Langtang Valley
OSM hiking route Langtang Valley, Nepal (30.97 km line). out-and-back; one-way 30.97 km, round-trip 61.95 km in prose. Permits are the headline (official NTB/NTNC 2026-09-21). Vertical figures from the Wave N GLO-30 resample.
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Distance 30.97 km Reported · Ascent provisional (DEM sample) · High point provisional (DEM sample) · 8d · SAC T2 · Moderate (OSM hiking, OSM trail_visibility excellent)
Cite this record
The Hiking World, Langtang Valley, read 2026-09-24, https://www.thehikingworld.com/trails/langtang-valley
How we verify · last checked 2026-09-24
Byline
- The Hiking World editorial team · author
Figures marked provisional are seed data and still need verification. Source and last-checked date sit under each cited value.
Forecast at page generation, 2026-11-04T22:08:43.904Z
Representative point on Langtang Valley: 28.176°, 85.438°, about 3860 m. A forecast, not a trail-surface reading.
At generation: -7°C, Clear.
- 2026-11-05 -7–7°C, 1 mm
- 2026-11-06 Mainly clear, -7–6°C
- 2026-11-07 -8–5°C, 1 mm
Source Open-Meteo. Mountain weather changes with elevation and aspect.
Life-safety notices on this page come from the issuer.
Sourced record
Verified and reported stay in separate blocks. A section with no source is left out. How we verify.
Reported
Named secondary source, including OpenStreetMap. Not a verified official figure.
Distance and elevation
The stored line is OpenStreetMap relation 1269089, 30.97 km. That is the Facts distance for this record, not a second measurement.
OpenStreetMap contributors (ODbL), relation 1269089 · source · checked 2026-09-21
Maps
Geometry © OpenStreetMap contributors, ODbL, relation 1269089.
OpenStreetMap contributors (ODbL), relation 1269089 · source · checked 2026-09-21
Permits and fees are shown once, from the permit record.
Map data © OpenStreetMap contributors, ODbL.
Altitude weather delta
High 3,860 m minus low 1,439 m is 2,421 m of relief on this record. A standard tropospheric lapse of 6.5 °C per 1,000 m implies about 15.7 °C cooler at the high point than the valley, all else equal.
That is a model (International Standard Atmosphere environmental lapse), not a forecast and not a trail-closure. Wind, snow, and storms stay in Hazards.
derived:lapse-rate · read 2026-09-10 · provisionalISA 6.5 °C / 1,000 m · wikipedia.org · 2026-09-10
Map loads when this section is on screen.
GeoJSONLine download is the stored OSM geometry, simplified. It is not a surveyed GPS track. GPX · GeoJSON
Catalog entry
Moderate (OSM hiking, OSM trail_visibility excellent)
- SAC T2
- Mountain hiking. Continuous trail, some steep ground, sure-footedness helpful.
- YDS Class 1
- Class 1. Walking on an established path; low fall risk.
Ingested from OpenStreetMap relation 1269089 (ODbL). The mapped line is that geometry. Distance, ascent, descent, and high/low points are the Wave N evidence-sheet figures (adjudicated 2026-09-21). Permits are official-sourced; geometry stays OSM-provisional. Water was not mapped to named WaterSource points.
OSM 2D length is 30.97 km (OSM line, ODbL, relation 1269089, lastVerified 2026-09-21). Provisional — OSM line, no official kilometre. Out-and-back: the published figure is the one-way 30.97 km; round-trip is about 61.95 km in prose only. ⚠ secondary: operator itineraries cite about 70 km. Cited km is not this figure. Out-and-back: publish one-way. Relate helambu / gosaikunda, do not merge.
typicalDays 8 is the published typical window (operator, secondary), not a figure and not implied by the OSM kilometre.
High 3,860 m is Copernicus GLO-30 (lastVerified 2026-09-21), verified on the walked OSM line. Low 1,439 m is the same DEM resample, verified. Ascent 2,953 m / descent 558 m remain provisional DEM. Landmark Tserko Ri 4,984 m / Kyanjin Ri 4,773 m (Wikipedia; DEM high 3,860 m is this OSM line).
Langtang National Park entry is required (https://ntb.gov.np/en/plan-your-trip/before-you-come/park-entry-fees, checked 2026-09-21); the park-table amount was not copied onto this sheet this pass — confirm live. TIMS NPR 2,000 foreign / NPR 1,000 SAARC (https://ntb.gov.np/en/plan-your-trip/before-you-come/tims-card, checked 2026-09-21).
Water
No water sources recorded.
Permits & fees
Conditions, fees and rules change. Confirm with the issuer and local authorities before you go. This is a reference, not a substitute for local advice. Terms
- Permit
- Langtang NP entry + TIMS card
Permits and fees for this year · Permit cost
Permits and fees
We are not the issuer. Fees and rules change — confirm with the issuer before you pay. Issuer page.
| Permit | Cost | Quota / restriction | Issuer | Source | Checked |
|---|---|---|---|---|---|
| Langtang National Park entryReported | Not recorded | — | Not recorded | Issuer page | read 2026-09-24 |
| TIMS cardReported | Not recorded | — | Not recorded | Issuer page | read 2026-09-24 |
Hazards
- Altitude / AMS: GLO-30 high 3,860 m on this line (Tserko Ri 4,984 m / Kyanjin Ri 4,773 m (Wikipedia; DEM high 3,860 m is this OSM line)). This is a high-altitude trek, not a casual hike.
- Related records helambu, gosaikunda share geography — relate-not-merge.
Getting there
Sourced legs to the Syabrubesi approaches base start station — where this trail record begins. This is not a route planner: durations are approximate and marked provisional until an official transport page confirms them.
Road · Kathmandu (KTM) → Syabrubesi
Road north from Kathmandu to the published Syabrubesi trailhead. Langtang NP entry and TIMS are the official permits (https://ntb.gov.np/en/plan-your-trip/before-you-come/park-entry-fees, checked 2026-09-21).
ntb.gov.np · read 2026-09-21 · provisional
No rail. OSM line start is the stored vertex, not an invented village pin.
Plan from your location
Type a city, then pick a match. These links open external search tools — they do not fetch fares or timetables.
Getting there car-free
- OSM line start: car-free flag unknown.
- OSM line end: car-free flag unknown.
Trailheads
- OSM line start car-free: unknown
- OSM line end car-free: unknown
Questions
Do I need a permit for Langtang Valley?
A permit is listed as required for Langtang Valley: Langtang NP entry + TIMS card. Status: Reported. Confirm with the issuer before travel.
When is the best time to hike Langtang Valley?
On this record the best season is: Mar–May and Sep–Nov (NTB / NTNC walking season, checked 2026-09-21).
How difficult is Langtang Valley?
Langtang Valley is graded OSM sac_scale: hiking · SAC T2 · YDS 1. A sourced hazard on this record: Altitude / AMS: GLO-30 high 3,860 m on this line (Tserko Ri 4,984 m / Kyanjin Ri 4,773 m (Wikipedia; DEM high 3,860 m is this OSM line)). This is a high-altitude trek, not a casual hike.
How long is Langtang Valley?
The length on this record is 30.97 km (reported). Published figures may differ. See /guides/how-long-is-the-trail
How do I get to Langtang Valley?
The record’s base start is Syabrubesi approaches. A primary gateway on the record is Tribhuvan International Airport (KTM). Trailhead transit notes are not included in this public FAQ.
Related trails
- GosainKunda Trek · Langtang
- Helambu · Langtang
- Annapurna Base Camp · Nepal
- Annapurna Circuit · Nepal
- Dudh Pokhari Lake · Nepal
- Everest Base Camp · Nepal