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Jefferson County

Keystone tunnel under the road

Highlight • Bridge

Keystone tunnel under the road

Running

5.0

(1)

This Highlight is in a protected area

Please check local regulations for:

Lewis & Clark Caverns State Park

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    December 20, 2024

    Running

    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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    Nearby routes

    Best routes near Keystone tunnel under the road

    20

    runners

    1. Dolomite Knob – Keystone tunnel under the road loop from Lewis & Clark Caverns State Park

    12.5km

    01:29

    460m

    460m

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

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    Hard

    Details

    Informations

    Elevation 1,490 m

    Weather

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    Today

    Thursday 12 March

    11°C

    3°C

    86 %

    Additional weather tips

    Max wind speed: 41.0 km/h

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    Location: Jefferson County, Montana, United States

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