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United States
Montana

Jefferson County

Keystone tunnel under the road

Discover
Places to see
United States
Montana

Jefferson County

Keystone tunnel under the road

Keystone tunnel under the road

Recommended by 1 people

This Highlight is in a protected area

Please check local regulations for: Lewis & Clark Caverns State Park

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    17

    runners

    1. Keystone tunnel under the road loop from Whitehall

    12.5km

    01:29

    460m

    460m

    Expert run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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    December 20, 2024

    Built in the 1930’s, the bridge was specifically built using this ancient technique in order to preserve the old way of building.

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      Details

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      Elevation 1,490 m

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      Tuesday 7 October

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      Location: Jefferson County, Montana, United States

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