Mt. Jupiter Trail #809
Mt. Jupiter Trail #809 — tail catalogue entry from OSM relation 12799991. Geometry and elevation are OSM/GLO-30 and provisional. No special permit known; verify locally.
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Distance 19.8 km Reported · Ascent provisional (DEM sample) · High point provisional (DEM sample) · 1d · SAC T2 · Ungraded (tail ingest)
Cite this record
The Hiking World, Mt. Jupiter Trail #809, read 2026-09-24, https://www.thehikingworld.com/trails/mt-jupiter-trail-809
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, 2026-11-07T06:55:34.705Z
Representative point on Mt. Jupiter Trail #809: 47.704°, -123.032°, about 1728 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 1,728 m minus low 623 m is 1,105 m of relief on this record. A standard tropospheric lapse of 6.5 °C per 1,000 m implies about 7.2 °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.
Tail catalogue entry built from OpenStreetMap relation 12799991 (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
- Mt. Jupiter Trail #809 (start): car-free flag unknown.
- Mt. Jupiter Trail #809 (end): car-free flag unknown.
Trailheads
- Mt. Jupiter Trail #809 (start) car-free: unknown
- Mt. Jupiter Trail #809 (end) car-free: unknown
Questions
Do I need a permit for Mt. Jupiter Trail #809?
Permit status is unverified for Mt. Jupiter Trail #809. This desk does not assert that a walking permit is or is not required.
How difficult is Mt. Jupiter Trail #809?
Mt. Jupiter Trail #809 is graded SAC T2 · YDS 1.
How long is Mt. Jupiter Trail #809?
The length on this record is 19.8 km (reported). Published figures may differ. See /guides/how-long-is-the-trail
Related trails
- John Muir Trail · United States
- The Enchantments · United States