Foster and Marsh Island Loop

Puget Sound and Islands

updated 1 month ago

Foster and Marsh Island Loop is currently closed due to construction, with fencing and locked gates at the east end, although western access points may appear open, causing confusion for visitors. Construction is expected to continue through early 2027. The trail was reported snow-free and the road suitable for all vehicles as of August 17 and October 4.

Generated from 17 trip reports. Trails change faster than reports do, so check anything you’d turn around for.

What hikers ask about Foster and Marsh Island Loop

Generated from the most recent trip reports, newest 1 month ago. Check anything you’d turn around for.

No trip reports on this trail in 1 month, so everything below is at least that old.

The Foster and Marsh Island Loop trail is currently closed for construction. Fencing and locked gates are in place at the east end, though western access points were found open, leading to visitor confusion as of October 4. Construction is scheduled to continue through early 2027.

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Trail notes generated from recent reports. Conditions change fast.

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Puget Sound and Islands > Seattle-Tacoma Area

Attempted to walk the Foster and Marsh Island loop trail Sunday morning but it is currently closed for construction.  The trail is fenced and locked at the east end, however, the gates at the western ...

Puget Sound and Islands > Seattle-Tacoma Area

We parked at Arboretum Parking Lot 15 and walked to the Arboretum Waterfront Trail through Memory Point.The Foster Island and Marsh Island Loop is currently closed, but we were still able to walk onto...

Puget Sound and Islands > Seattle-Tacoma Area

My husband and I walked the first part of the Foster and Marsh Island loop. We parked at the north end of the Arboretum, and the first portion of the trail that goes under the 520 overpass was very ni...

Puget Sound and Islands > Seattle-Tacoma Area

I was going to hike from the old MOHAI area across Foster Island to the Arboretum but the trail is definitely closed.  It was easy enough to follow the new bike/walking path across 520 to the Arboretu...

Puget Sound and Islands > Seattle-Tacoma Area

Seattle Olmsted Circuit, Section 3 Loop Option.  Husky Stadium to Marsh and Foster Islands then to visitor center, Azalea Way, Loop Trail and exit up Boyer to enter Interlaken Park but exit before hea...

Puget Sound and Islands > Seattle-Tacoma Area

Did a run through Foster and Marsh Islands trail (i.e., through the Arboretum to the University of Washington Link Station) after a day with pretty heavy rain. The trail is in good condition. The wate...

Puget Sound and Islands > Seattle-Tacoma Area

Lovely walk and talk with our friends and a 4 and 5 year old (who mostly biked). Amazing bird action and the real highlight for me was so much beaver sign way out on Marsh Island. There are also 2 gia...

Puget Sound and Islands > Seattle-Tacoma Area

Walked the Foster/Marsh Island loop trails after walking down from the Union Bay Natural Area.  There is limited parking over at the Arboretum or you can access on the northwest end walking down throu...

Puget Sound and Islands > Seattle-Tacoma Area

I went running through the trail and the arboretum from Madison and through Foster and the Marsh Islands and up to Montlake. The colorful fall leaves are doing great! I didn't encounter any mud on the...

Puget Sound and Islands > Seattle-Tacoma Area

West bridge to Marsh Island is closed, so you can’t do the loop. Trail over the water is lovely.