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green Bellefields Loop


0.8 mile 1.3 kilometer loop


Ascent: 21' 6 m
Descent: -19' -6 m
High: 38' 12 m
Low: 21' 6 m


Avg Grade: 1% (1°)
Max Grade: 12% (7°)


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Trail shared by Brendan Ross

An inviting, well-maintained loop through a lush wetland.

Brendan Ross

Features Birding · Fall Colors · River/Creek

The Environmental Education Center and Blueberry Farm keep hours, but the trails are open 24/7.


Bellefields Loop is the more wooded option of Mercer Slough's two main trails, making a small circle through the lush eastern side of the wetland.

Most people entering the Slough from the east side will do so from the small parking areas near the Education Center on 118th Avenue. A brief connector leads to the Loop. Both the trail and the connector are of the same composition: very soft doubletrack, made up of dirt, wood chips, and pine needles. Aside from some short ups and down on the connector, Bellefields Loop is very flat, and is a good place for beginners to get their off-pavement footing.

Follow the easygoing path as it makes a gradual clockwise circle towards the creek, passing another connector on its southeast corner. Dense trees open up to grassy fields as the Loop enters the swamp. The Slough Connector branches off to the left as the loop turns north; taking this path will lead to a boardwalk and Heritage Loop.

Bellefields Loop follows the creek, often visible to the left, on its western stretch. The abundant plant life blocks out much of the outside world, and this segment can feel miles from the city. Heading east for its final portion, the trail zig zags gently before reaching a fork.

Heading left will return to Education Center Connector, or go right for another trip around.

Flora & Fauna

Mercer Slough is a wetland preserve, and visitors can see a number of animals and plants which are hard to spot in other areas of the city. One sign advertises 113 species of birds, 25 species of mammals, and 19 species of fish, including river otters and coyotes. Plant life in the 320-acre park includes hundreds of species drawing from upland forest, scrub-shrub wetland, and open meadow habitats.

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Feb 5, 2019
Darren Moss
3.2mi — 1h 43m
Jan 27, 2018
Darren Moss
1.7mi — 0h 52m
Aug 25, 2017
Matt Dalrymple

Trail Ratings

  2.7 from 3 votes


  2.7 from 3 votes
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in Washington


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277 Since Jun 18, 2016
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