UpToWhereWhat can you see from Mount Diablo Peak?
An isolated East Bay peak with extraordinary long-distance visibility.
From Mount Diablo Peak, the terrain-limited line of sight reaches up to 341 km. The single farthest piece of visible terrain lies 341 km to the east-southeast (bearing 118°), at 3,727 m elevation. These results account for Earth's curvature and standard atmospheric refraction, computed from 30-meter resolution Copernicus GLO-30 elevation data across 2,090,625 terrain samples.
Open the interactive visibility map →Visibility by direction
The horizon is most open toward the north, where sightlines run 163 km on average; terrain closes the view down fastest to the northeast, at 0.0 km.
| N | 163 km | |
| NNE | 93.9 km | |
| NE | 0.0 km | |
| ENE | 0.0 km | |
| E | 0.0 km | |
| ESE | 159 km | |
| SE | 63.1 km | |
| SSE | 69.3 km | |
| S | 98.5 km | |
| SSW | 69.2 km | |
| SW | 72.7 km | |
| WSW | 127 km | |
| W | 98.9 km | |
| WNW | 88.5 km | |
| NW | 115 km | |
| NNW | 146 km |
Farthest named landmarks in view
248 named peaks, hills and headlands stand inside this viewshed. These are the farthest ones you could pick out on a clear day:
| Landmark | Visible distance | Direction | Elevation |
|---|---|---|---|
| Mount Florence | 341 km | ESE · 118° | 3,789 m |
| Rainbow Mountain | 340 km | ESE · 118° | 3,668 m |
| Tulare Peak | 339 km | ESE · 118° | 3,539 m |
| Caltech Peak | 339 km | ESE · 112° | 4,207 m |
| Needham Mountain | 339 km | ESE · 117° | 3,819 m |
| Vandever Mountain | 339 km | ESE · 118° | 3,636 m |
About Mount Diablo Peak
Mount Diablo rises 1,173 meters from the San Francisco Bay Area as an upthrust peak of the Diablo Range. Despite modest elevation, it boasts some of the West's most remarkable visibility, with Lassen Peak visible 181 miles away on clear days. Eight major bridges are visible from the summit.
Did you know?
- On exceptionally clear days, Diablo is said to offer the second-largest area of visible land of any peak on Earth, after Kilimanjaro, thanks to its isolation above the surrounding lowlands.
- Spanish soldiers are said to have named the mountain after Native American warriors who vanished mysteriously into the vegetation during an encounter, an escape the soldiers blamed on 'El Diablo.'
- A beacon on the summit, added in 1928, has been lit every 7 December since as a memorial to Pearl Harbor and an aid to aviators.
- Sierra Nevada mountain range plainly visible from summit on clear winter days.
Frequently asked questions
How far can you see from Mount Diablo Peak?
On a clear day the terrain allows a line of sight of up to 341 km from Mount Diablo Peak. The average visible distance across all 360 directions is 85.0 km. Atmospheric conditions (haze, humidity) usually reduce practical visibility below the terrain-limited maximum.
What is the farthest point visible from Mount Diablo Peak?
The farthest terrain visible from Mount Diablo Peak lies 341 km to the east-southeast, at an elevation of 3,727 m. Earth's curvature and atmospheric refraction are accounted for in this calculation.
How high is Mount Diablo Peak?
The observation point at Mount Diablo Peak sits at 1,169 m above sea level (Copernicus GLO-30 elevation model).
How is this visibility map calculated?
UpToWhere traces lines of sight in 360 directions from the observer using 30 m-resolution Copernicus terrain data, correcting for Earth curvature and standard atmospheric refraction. You can run the same analysis for any point on Earth with the free calculator.
Run your own analysis
Want to know what you can see from your house, a summit you're planning to climb, or a plot of land? UpToWhere computes the same 360° viewshed for any point on Earth in seconds — free.
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