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    This reflects the 10Adventures difficulty rating for each route. We aim to keep ratings consistent across regions.
    This reflects the total elevation gained throughout this route as measured by the GPS file. This includes all ascents and descents, and is higher than what is quoted in most route guides, which simply measure the distance between the starting-point and high-point of the route.
    639 m
    This reflects the return distance of this route as measured by the GPS file.
    14.8 km
    This reflects the estimated time the majority of users will take on this trail. If you are slower, add time to the top-end figure. If you are fast, then you may complete this route faster than this time range.
    User Ratings
    These ratings are completed by users who have completed this trail and not subject to reviews by 10Adventures.
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    Directions to Trailhead

    Lake Dorothy Trail


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    Table of contents

    Lake Dorothy Trail is a moderately trafficked out-and-back trail in Mount Baker-Snoqualmie National Forest that is rated as moderate. This hike leads through the East Fork of the Miller River valley to Lake Dorothy. If you want to press on a bit further, you can also access Bear Lake and Deer Lake on this trail. This is also a popular choice for short backpacking trips.

    Note that the last 6.4 km of the road to the trailhead has been washed out for long stretches of time in the past, necessitating an additional walk in. This adds a long, less exciting pre-hike to your day. We recommend bringing bikes if you have them to shorten this stretch.

    Route Description for Lake Dorothy Trail

    Lake Dorothy is a calm, tranquil alpine lake settled into a mountain valley, flanked by two smaller lakes to the southwest. This is a lovely day hike or short backpacking adventure, although the unpredictable maintenance of the road to the trail, which is subject to washout, may unexpectedly extend your hike by 6.4 km. Bring flip-flops if this is the case, as it tends to be wet!

    The hike begins at the end of the road, following a well-maintained track along the East Fork of Miller River through the valley. The elevation gain is mild for the first stretch. There is a stream crossing before the trail wraps to the right near the foot of the lake.

    A spur trail on your right leads to the lakeshore, but continue on the main trail to wrap around the eastern shore of the lake and around the southern end. You can end your hike anywhere along this section, but if you want to add some length, take the switchbacks that head up the ridge to Bear and Deer Lake. It’s a short, steep sprint to a nice vantage point over all three lakes.

    When you’re ready, retrace your steps to the road.

    Getting to the Lake Dorothy Trail Trailhead

    The trailhead for the Lake Dorothy Trail is at the end of National Forest Development Road 6412. If the road is washed out, park where it is safe to do so and walk to the trailhead.

    Route Information

    • Backcountry Campground:

      Lake Dorothy Backcountry

    • When to do:


    • Pets allowed:

      Yes - On Leash

    • Family friendly:


    • Route Signage:


    • Crowd Levels:


    • Route Type:

      Out and back

    Lake Dorothy Trail Elevation Graph

    Weather Forecast

    Check Area Weather


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