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Rattlesnake Mountain Trail



10.2 mile 16.5 kilometer point to point
77% Runnable


Ascent: 2,675' 815 m
Descent: -2,796' -852 m
High: 3,413' 1,040 m
Low: 952' 290 m


Avg Grade: 10% (6°)
Max Grade: 37% (20°)


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A moderate run along the ridge of Rattlesnake Mountain with great views of the Cascades.

Eric Ashley

Features Views · Wildlife

The three ledges along this trail have lots of exposure and care should be taken, especially with children or dogs. Parking lots on either end of this run require the use of a Discover Pass.

Runner Notes

Steady climbs will leave your legs burning, but the trail is in good shape and the views are excellent. Expect a steeper and more technical descent at the end with lots of people to keep you company.


The Rattlesnake Mountain Trail can be used in either direct and is best enjoyed with a retrieval vehicle waiting at the destination. Beginning from the Snoqualmie Point Park, the trail heads up the slope and into the trees, making a number of road crossing in the first couple of miles. Stan's Overlook is a worthwhile diversion that can be reached quickly from the trail. The towering slopes on the other side of I90 are quite striking.

From there, the trail continues switchbacking along the ridge. Occasionally, the route will make use of old roadways, but thorough signage makes the navigating straightforward. Just over four miles in, the trail comes to Grand Prospect Viewpoint. Take a moment to rest on the conveniently placed benches as you soak in the sights. If running as an out-and-back, this is a good turn around spot.

The climbing isn't done, but the going remains easy over the next few miles as the trail follows the rolling elevation of the ridge. The last few miles of the trail descends along a series of switchbacks through a young forest. The big highlights will be three ledges that provide great views. The lowest is Rattlesnake Ledge and it's a very popular destination, so expect lots of company here and as you continue down the trail to where it ends on a service road near Rattlesnake Lake.

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Sep 15, 2019
Jordan Goldwarg
Sep 14, 2019
Karen Fisher
Jun 15, 2019
Greg Bateman
Foggy at the top
May 13, 2019
Christof Dreyer
14mi — 3h 00m
Apr 29, 2019
Jeff Schuler
Apr 28, 2019
Caitlin Duffy
Dec 24, 2018
Matt Catallo
Make sure to wear your trail runners as the snow gets relatively deep around 3 miles into the run. Otherwise fantastic run. 11.6mi — 1h 30m
Sep 17, 2018
Vikram Sahney
Ran the full ridge out and back. Trail is in great shape. Almost no people until you get to Rattlesnake Ledges area. 20.4mi — 4h 00m

Trail Ratings

  4.1 from 21 votes


  4.1 from 21 votes
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in Washington


238 Views Last Month
6,855 Since Sep 27, 2016



Barely a cloud in the sky!
May 11, 2019 near Riverbend, WA
The view from the upper Rattlesnake Mountain ledge.
Sep 27, 2016 near Riverbend, WA
You'll receive a beautiful view of Mt. Si from Rattlesnake Ledge on a sunny, clear morning.
May 11, 2017 near Riverbend, WA
Looking down on rattlesnake lake
May 11, 2019 near Riverbend, WA
View from along the Rattlesnake Mountain Trail.
Sep 28, 2016 near Riverbend, WA
Despite the recent cold snap and snow, signs of the approaching Spring remain, at least at the base of the mountain
Mar 17, 2020 near Snoqualmie, WA


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