Alta Trail
Alta Trail — tail catalogue entry from OSM relation 16865146. Geometry and elevation are OSM/GLO-30 and provisional. No special permit known; verify locally.
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Distance 20.1 km Reported · Ascent provisional (DEM sample) · High point provisional (DEM sample) · 1d · SAC T2 · Ungraded (tail ingest)
Cite this record
The Hiking World, Alta Trail, read 2026-09-24, https://www.thehikingworld.com/trails/alta-trail
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, 2026-11-07T07:20:46.163Z
Representative point on Alta Trail: 36.586°, -118.709°, about 3394 m. A forecast, not a trail-surface reading.
Source Open-Meteo. Mountain weather changes with elevation and aspect.
Life-safety notices on this page come from the issuer.
Altitude weather delta
High 3,394 m minus low 1,976 m is 1,418 m of relief on this record. A standard tropospheric lapse of 6.5 °C per 1,000 m implies about 9.2 °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
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GeoJSONThis line is a schematic. The files are not a GPS track. GPX · GeoJSON
Catalog entry
- 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.
Stored distance is 20.1 km. The chart axis follows the DEM sample (19.36 km), not the published line length.
Tail catalogue entry built from OpenStreetMap relation 16865146 (ODbL). The stored line is the OSM geometry, decimated; its 2-D length is provisional and not published as walking distance.
Elevation high/low and ascent/descent are Copernicus GLO-30 samples at the line vertices (copernicus-dem:glo-30) and remain provisional.
No special permit was researched for this trail. Permit is marked unverified — confirm locally before relying on it.
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 status is unverified.
Getting there
No sourced gateway chain yet.
Getting there car-free
- Alta Trail (start): car-free flag unknown.
- Alta Trail (end): car-free flag unknown.
Trailheads
- Alta Trail (start) car-free: unknown
- Alta Trail (end) car-free: unknown
Questions
Do I need a permit for Alta Trail?
Permit status is unverified for Alta Trail. This desk does not assert that a walking permit is or is not required.
How difficult is Alta Trail?
Alta Trail is graded SAC T2 · YDS 1.
How long is Alta Trail?
The length on this record is 20.1 km (reported). Published figures may differ. See /guides/how-long-is-the-trail
Related trails
- John Muir Trail · United States
- The Enchantments · United States