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Cogswell Marsh

Hayward Regional Shoreline

March 30th, 2024

6.1 miles
10 vertical feet
Total Time: 2:24

Starting elevation
5 feet
Max elevation
16 feet

Rating: 6/10

Directions: From San Jose, take 880 north. Take 92 west toward the bridge. Take exit 24 for Clawiter Road. Continue straight onto Breakwater Ave. Turn left to stay on Breakwater. Park on the street next to the interpretive building near the end of the road.   View Driving Map



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The Hayward Shoreline Interpretive Center is right next to Highway 92, not far from the San Mateo Bridge toll plaza. But, it doesn't take long to get away from the traffic.

We walked past the center (which was open, but we didn't see anyone go in or out, and there were only a handful of cars here). Then we turned left and started off on the flat, wide, gravel trail. Almost immediately we saw a couple joggers and a cyclist. You'll almost assuredly see many of them on the trail. You'll also see birds. Lots of birds.

Goose in flight

Walking next to the muddy canal

Looking toward the San Mateo Bridge

Looking toward the bridge

It had rained overnight, and a brief thunderstorm was forecast for this afternoon, but the trail was mostly dry. There were a few puddles that were easily walked around. There are no trees, only grasses and some bushes in places. There's water in various forms on both sides of the trail. Canals, ponds, marsh, and bay. At the start there's a canal on the left.

Hills beyond Hayward

Two geese

Walking past the wildflowers

Geese amongst the flowers

After about of mile we reached an intersection and turned left. This would be part of a loop at Cogswell Marsh. To the left we could see little birds walking on water/marsh at the edge of the bay. Further out to the north we could see the downtown buildings of both San Francisco and Oakland on either side of the bay.

San Francisco from afar

Lots of birds

Downtown San Francisco

After about 0.6 miles, we reached another intersection (the other side of the first loop) and crossed a long bridge. After another 0.4 miles we reached another intersection and took the left fork. We started to encounter more people now as we neared the parking lot at the other end of this hike. After reaching Hayward's Landing, we turned right and walked along the paved path along the flood control channel. There were lots of people along this half mile stretch to the parking lot. There are actually two parking areas here: one near the flood control channel crossing, and then another at the end of of the road, where there's also a bathroom. We stopped there briefly before getting back on the trail, turning left and completing the second loop.

The long bridge

View from the long bridge

Egret

Geese standing at attention

Geese in flight

Ducks

Flood control channel

After crossing the long bridge again we took the left fork to complete the first loop, then turned left for the final stretch back to the car as drops of rain started to fall. We got to the end just as we started to hear thunder in the distance. If you're going to do this hike, you can park at either end. There were far more cars at the northern end. It seems like there's sufficient parking at either end, though perhaps you're more likely to run into an issue at the northern end.

Egret

Egret

Big egret


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