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San Gabriel Mountains National Monument

The 100" Hale Telescope

Highlight • Monument

The 100" Hale Telescope

Mountain biking

5.0

(2)

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Angeles National Forest

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  • Location: San Gabriel Mountains National Monument, Los Angeles County, California, United States

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  • Take Me There

    Tips

    February 14, 2022

    Mountain biking

    This telescope was built in 1917 and took over 11 years due difficulty hauling all the components up Mt. Wilson Toll Road. The glass mirror weighs around 9,000 pounds and remains the largest solid glass mirror ever made. This was the largest telescope until the 200" telescope was built on Palomar Mountain.

    mtwilson.edu/building-the-100-inch-telescope
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    Nearby routes

    Best routes near The 100" Hale Telescope

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    5

    riders

    #1.

    Mount Wilson Summit Viewpoint – Mueller Tunnel loop from Memorial Park

    66.0km

    05:43

    1,800m

    1,800m

    Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

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    Hard

    Details

    Informations

    Elevation 1,730 m

    Weather

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    Tuesday 19 May

    18°C

    11°C

    -- %

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    Location: San Gabriel Mountains National Monument, Los Angeles County, California, United States

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