4.5
(2127)
6,857
runners
00:41
5.68km
0m
Running
Jog the Mallard Slough Trail, a moderate 3.5-mile route in Don Edwards San Francisco Bay National Wildlife Refuge, offering marsh views and
Last updated: February 26, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Waypoints
Start point
Parking
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965 m
Highlight (Segment) • Trail
Tip by
5.68 km
End point
Parking
Way Types & Surfaces
Way Types
5.16 km
468 m
< 100 m
Surfaces
5.16 km
488 m
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Elevation
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Weather
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Saturday 18 July
24°C
14°C
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Max wind speed: 13.0 km/h
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This route was planned by komoot.
Parking is typically available at designated areas within the Don Edwards San Francisco Bay National Wildlife Refuge. It's always a good idea to check the official refuge website for the most current information on access points and parking availability before your visit.
Dogs are generally permitted on a leash on designated trails within the Don Edwards San Francisco Bay National Wildlife Refuge, including the Mallard Slough Trail. Please ensure your dog remains on a leash at all times to protect the local wildlife and for the safety of other visitors. Always pack out any waste.
The trail offers unique experiences year-round. However, for comfortable jogging, spring and fall are ideal due to milder temperatures. Winter can be good for birdwatching, but be aware that sections of the trail may be subject to seasonal closures during hunting season (late October to late January). Always check current conditions before heading out.
No, there are typically no entrance fees or permits required to access the Mallard Slough Trail or the Don Edwards San Francisco Bay National Wildlife Refuge for day use. However, it's always wise to check the official refuge website at fws.gov for any updates on regulations or special events.
The trail is primarily a dirt and gravel road or a compacted dirt levee, offering a relatively flat surface. While generally easy, some sections can be bumpy, have larger gravel, or feature soft spots. It's important to note that the trail can become muddy after rain, which might require more moderate effort.
The trail is a fantastic spot for birdwatching! You'll be treated to abundant waterfowl and migratory birds such as egrets, herons, shorebirds, ducks, pelicans, and cormorants, especially in the tidal marshes and salt ponds. Keep an eye out for other marsh inhabitants as well.
Yes, the trail offers expansive views of tidal marshes, vibrant yellow and red salt ponds, and open water. You'll also get views of the surrounding Bay Area ridgelines. A unique feature is a spur trail that provides access to views of the historic ghost town of Drawbridge.
Yes, the route is part of the larger San Francisco Bay Trail system. It also intersects with sections of the Alviso Slough Trail, New Chicago Marsh Trail, and Marsh View Trail, offering opportunities to extend your outing.
The full loop is approximately 5.7 kilometers (about 3.5 miles) and typically takes around 40 minutes to jog, depending on your pace and how often you stop to enjoy the scenery or wildlife.
Yes, it's crucial to check current conditions before visiting. The trail has been subject to closures due to construction, with some parts expected to remain closed until September 2025. Additionally, seasonal closures occur during hunting season, typically from late October to late January.
Given the varied terrain and potential for mud, sturdy jogging shoes are recommended. Bring water, especially on warmer days, as there is no water available on the trail. Binoculars are great for birdwatching, and don't forget sun protection like a hat and sunscreen, as the trail is exposed.
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