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Don Edwards National Wildlife Refuge

EASY 19 reviews

Don Edwards National Wildlife Refuge is a 7.6 mile lightly trafficked out and back trail located near Alviso, California that offers the chance to see wildlife and is good for all skill levels. The trail offers a number of activity options and is accessible year-round.

7.6 miles
49 feet
Out & Back

kid friendly


mountain biking

nature trips

trail running


bird watching

rails trails




no dogs

As of April 15, 2019, a part of Alviso Slough Trail will be intermittently closed for repairs. Please refer to park page for updates. Easy trails and mass migrations make this one of the best birdwatching locales in the San Francisco Bay Area The ducks, geese, pelicans and egrets are only the most visible among the fascinating array of waterfowl hanging out near the Alviso Environmental Education Center of the Don Edwards San Francisco Bay National Wildlife Refuge. The trailhead near Alviso on the southernmost edge of San Francisco Bay does have issues: one is the smell, thanks to an abundance of shallow, often-still water combined with the aroma of a nearby landfill. Once your nose gets acclimated, however, you're ready for the chance to see more wildlife in an afternoon than you'd see in a month hiking the hills rimming the Bay Area. Of course if you're interested in any wildlife other than birds, you could be a bit disappointed. But how could you complain about 280 species of avians numbering in the millions on their annual Pacific Flyway expeditions? The trails on this 7-mile track are pretty basic: A section of the Mallard Slough Trail near the Environmental Education Center connected to a section of the Alviso Slough Trail. The network of levees in this section of the refuge creates nearly boundless variations, depending on how long you plan to hike. Best times to go: Migrations are heaviest in the spring and fall. Summer heat makes the hiking uncomfortable, but winter should be fairly nice.

no shade
28 days ago

Trail is along the salt marshes in the south part of the bay. Can get hot due to no shade but the constant breeze makes it pleasant for the most part. Lots of birds and tons of flies.

5 months ago

need to wait for the mud to dry out and it will be fun. super thick mud 1 mile or so into to the trail.

6 months ago

if you can get past the bay Marshland smell I think it's really beautiful easy Trail to get some step counts in that is by the water front

Friday, May 16, 2014

I tried to hike it this morning. There was like 50 mosquitoes per cubic feet of air you have to go through. Gave up after going half a mile into Mallard Slough Trail. There were some nice birds around, but when you constantly need to wave your hands to make your way through mosquitoes, those can't get enough attention.

5 months ago

Thursday, December 28, 2017

mountain biking
Monday, August 21, 2017

Thursday, July 20, 2017

Sunday, July 16, 2017

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Thursday, June 01, 2017

Saturday, May 20, 2017

Monday, March 27, 2017

Friday, January 27, 2017

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