Marten Lake Trail

This reflects the 10Adventures difficulty rating for each route. We aim to keep ratings consistent across regions.
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.
This reflects the return distance of this route as measured by the GPS file.
14.5 km
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.
574 m
User Ratings
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Directions to Trailhead

Marten Lake Trail is a lightly trafficked out-and-back trail in Mount Baker-Snoqualmie National Forest that is rated as hard. This hike is very pretty but sees fewer visitors than other nearby trails, making it a good choice for a bit of solitude. There is excellent camping near the lake and you can swim if you wish to.

While the trail is fairly easy to follow, offline GPS mitigates the risk of losing your way at unsigned junctions.

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Route Description for Marten Lake Trail

Marten Lake provides a lovely payoff for a reasonable amount of effort and offers a less busy experience than many other hikes in the area. Finding the trailhead can be a bit challenging so we recommend referring to your GPS track, but there are several trails that converge, making the risk of going the wrong way minimal.

The first 4.8 km or so from the trailhead are mostly level and straightforward. In areas where the trail is less obvious, look for flagging tape. Around 6.4 km, the trail becomes very rooty, so watch your step.

Upon reaching the lake, you can find a nice lounging spot or go for a swim. When you’re ready to return, take the same route, keeping an eye on your GPS to stay on the right path.

Getting to the Marten Lake Trail Trailhead

The trailhead for Marten Lake Trail is north of Middle Fork Campground near the end of National Forest Development Road 5640.

Route Information

  • Backcountry Campground

    Marten Lake Backcountry

  • When to do


  • Pets allowed

    Yes - On Leash

  • Family friendly


  • Route Signage


  • Crowd Levels


  • Route Type

    Out and back

Marten Lake Trail Elevation Graph

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Marten Lake Trail Reviews

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