Cogswell Marsh Loop is a 3.1 mile moderately trafficked loop trail located near Hayward, California that features beautiful wild flowers and is good for all skill levels. The trail offers a number of activity options.

Length3.1 miElevation gain39 ftRoute typeLoop
Kid friendlyFishingHikingWalkingBird watchingrunningViewsWildflowersWildlifeNo dogs
Description
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Getting There

Hayward Regional Shoreline contains over a thousand acres of marshlands and seasonal wetlands. With five ponds and 15 islands, it is a great place for bird watching and spotting native plants and wildflowers along the trails. Originally built for salt harvesting, the levees stretch along the bay, offering great vistas to view. You can fish from the levee, but you must have a fishing license to do so. There are a variety of recreational activities to enjoy, including hiking, jogging, bicycling, and picnicking. This hike is in full sun but come visit and enjoy the fresh bay breezes, which make it well worth the hike! The trail will walk you through Cosgswell Marsh, a 250-acre salt marsh. This 2.9-mile loop offers views of the bay, mud flats, and the San Francisco skyline. This hike is flat, with a combination of dirt, loose and packed graveled trails, and crosses over two footbridges. Dogs are not permitted in the southern portion of the park in order to protect nesting and feeding wildlife. Two benches and informational displays can be found along the trails. Restrooms are available in the parking lot, but there is no water; be sure to bring your own. Please stay on the trails! This trail does not have any markers, until you almost complete the loop so be sure to bring a park map to guide you. Starting in the parking lot just past the park office, walk through the gate to start on the trail. You will veer to the left at the fork and walk 0.83 miles to the Cogswell Marsh Loop, which starts after crossing the first footbridge. After you cross the first footbridge proceed to the right to start by the water and work your way around, you can go either direction to complete the 1.2-mile loop. After completing the loop, walk back over the footbridge and follow the same path back to your starting point. The San Francisco Bay Trail intersects with the Cogswell Marsh Loop; be sure not to branch off from the trail, stay on the loop and follow it back to the first footbridge you crossed.

Park/Gate Hours: 5 a.m. to 10 p.m. Fees: None Note: The parking lot at the end of West Winton Av. closes at 5PM.

Driving Directions: Take I-880 (Nimitz Freeway) north from Fremont or south from Oakland to Hayward. Exit the freeway at West Winton Avenue and follow West Winton westwards toward the Bay to the staging area until you reach the park.

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Reviews (66)
Photos (265)
Recordings (75)
Completed (181)
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Grant Hughes
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Hiking

Great bay-side walk. Level, mostly gravel, good bird watching.

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Michael Locatelli
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Hiking
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Antoinette Stetzen
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Hiking
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Christopher Wang
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Hiking
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Kurt Fifita
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Hiking

Easy stroll. Nice Sunday walk.

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Charlene Fifita
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Hiking

Easy Peasy! Great for a walk with the kiddos!

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Christina M
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Hiking

beautiful but the only downside was not being able to locate the trail (no markers) but the trail er took was scenic and the weather beautiful

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Laura Martinez
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Hiking

Nice easy walk.

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Bernie Snow
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Walking

Nice views of the bay. Open trail with good nature and sights

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Elvira Velasquez
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Running

Great place at sunset!

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Tyler Chuck
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HikingGreat!

Excellent walk along the water! Really love this trail on a hot day as there can be a cool breeze from the ocean. There are also lots of birds to see while on the walk! When you get to Cogswell Marsh, note that there are no dogs allowed.

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Nisha Rahimun
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Hiking

I love this shoreline trail, so peaceful and less people! View of San Mateo bridge, San Francisco!

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Helene M.
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Bird watchingNo shade
First to Review

Flat, nice walk for a cloudy day. Saw different kinds of birds. Not really muddy.

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Steve Dorado
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Hiking
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Leslie Hall
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Hiking
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Amy McC
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Hiking
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Deekshita Chigullapally
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Hiking
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AllTrails User
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Hiking
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Serena Maniscalco
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Hiking
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Scott Manor
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Hiking
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Kristin Kobey
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Hiking
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Sarah Wilson
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Hiking
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Priya Karamchandani
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Hiking
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Joaquin Santos
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Mountain biking
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Tatiana Gupa
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Hiking
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Laura Martinez
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Hiking
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Darrell Burton
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Hiking
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S Chau
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Hiking
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Erin Lopez
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Hiking
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East Bay Regional Park District (EBRPD)
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Hiking
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