Snoqualmie Tunnel

Location: Snoqualmie, WA
Roundtrip: 5.3 miles
Difficulty: Easy
Gain: 0 ft.
Rating: ★★★★

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The Snoqualmie Tunnel was opened in 1914, and it was originally used as an underground section of “The Milwaukee Road” (a railroad that ran between Chicago and Seattle).


The railroad no longer travels this path, which now stands as part of the Iron Horse Trail. The trail is available for hikers as well as bicyclists and offers a unique experience to those brave enough to trek inside. The trail is nearly a straight shot from one end to the other and lacks any significant elevation changes. This makes it the perfect place for a spooky early fall stroll (or bike ride!).

*Please note that this trail is CLOSED from November 1st to May*

Make sure to display your Discover Pass when parking along the trail, and don’t forget to bring lights and a jacket! There are flushing toilets and picnic tables at the trail head. You’ll hike a little over 2 miles before reaching the next good stopping point at the other end of the tunnel, which also has picnic tables and a vault toilet.


If you have an adventure pup that won’t be bothered by the new environment feel free to bring them along! Do be mindful that many people enjoy this trail so make sure to be polite, and safe, by moving right for faster travelers.

If you’re feeling good once you exit the tunnel you can always add some length to your trip by continuing down the Iron Horse Trail a bit farther before turning around. There are some great views this way!

Above all, stay safe and have fun! If you decide to give this trail a try do let us know what you think!

If you happen to have any questions that were not addressed in this post feel free to comment or shoot us a message as well.


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