Castor
Trip Guide & 3D Map
Pennine Alps · Difficulty, season, and access — then explore the 3D terrain
Planning snapshot
Castor is a 13,855 ft summit in the Pennine Alps (Switzerland/Italy). PeakAtlas rates it snow / glacier (Alpine glacier); best season is Jul–Sep. No special summit permit. Typical staging is Zermatt (10 mi). Limited lodging data is mapped from OpenStreetMap for this region — stage in the listed town rather than expecting a full hotel directory. Use the 3D map and trip checklist before you go.
- Elevation
- 13,855 ft
- Prominence
- 541 ft
- Difficulty tier
- Snow / glacier
- Best season
- Jul–Sep
- Permits
- No special summit permit
- Staging
- Zermatt · 10 mi
- Mapped lodging
- Limited / none mapped
- Listed trails
- —
As of 2026-07-31 · Figures come from the PeakAtlas3D catalog: surveyed elevations and prominence, curated difficulty tiers, best-season windows, permit notes, staging-town distances, trail lists, and OpenStreetMap lodging near each summit. Not live weather, quotas, or prices.
How hard is Castor, and what do you need before you go?
Castor is listed as Alpine glacier with a best season of Jul–Sep. Use the difficulty, permit, and staging details below before you commit to a date.
- Difficulty
- Alpine glacier
- Best season
- Jul–Sep
- Access / staging
- Zermatt, Valais
How tall is Castor, and where is it?
- Location
- Valais, Switzerland/Italy
- Elevation
- 13,855 ft
- Prominence
- 541 ft
- Mountain range
- Pennine Alps
- Difficulty
- Alpine glacier
What makes Castor notable?
Classic Monte Rosa 4000er often climbed with neighboring Pollux.
Twin 4000er with Pollux on the Monte Rosa skyline — a popular glaciated traverse peak above Zermatt / Ayas.
After you check trip readiness for Castor, explore the summit on PeakAtlas3D’s interactive 3D topographic map in the Pennine Alps, Valais, Switzerland/Italy.
Closest places
- Zermatt — Valais via Klein Matterhorn / glacier