Antioch Dunes National Wildlife Refuge is a unique wildlife refuge located along the southern bank of the San Joaquin River, established to protect endangered plants and insects. This area features relict sand dunes, ranging from 0-50 feet high, which are remnants of a larger riverine sand dune ecosystem. While public access is highly restricted to preserve its sensitive habitat, the surrounding region offers opportunities for several sports like hiking, mountain biking, road cycling, and touring cycling.
43
Routes
4.5
(22)
Average rating
185
People visited

3
hikers
12.7km
03:51
440m
440m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

3
hikers
6.44km
01:54
190m
190m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

2
hikers
7.38km
02:02
120m
140m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

1
hikers
9.41km
02:46
270m
260m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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4.0
(4)
17
riders
31.3km
01:49
30m
30m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

2
riders
15.0km
00:59
70m
70m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

4.0
(6)
20
riders
33.1km
01:55
70m
70m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

5
riders
39.0km
02:19
130m
130m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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4.5
(2)
3
riders
60.0km
02:40
420m
420m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

5.0
(1)
26
riders
77.9km
03:46
340m
340m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

12
riders
56.7km
03:05
520m
520m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

10
riders
27.2km
01:16
220m
220m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
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2
riders
13.0km
01:34
490m
490m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

3
riders
11.0km
01:05
240m
240m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

50.7km
02:35
40m
40m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

5.02km
00:37
230m
230m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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Antioch Dunes National Wildlife Refuge was established to protect endangered plants and insects. It is the first national wildlife refuge in the U.S. created specifically for this purpose, safeguarding species like the Lange's metalmark butterfly, Antioch Dunes evening primrose, and Contra Costa wallflower.
Public access to Antioch Dunes National Wildlife Refuge is highly restricted due to its sensitive habitat and endangered species. Activities like hiking, mountain biking, and cycling are generally not permitted. Access is typically limited to docent-led tours, which require visitors to stay on designated trails.
While direct hiking within the refuge is restricted, the surrounding region offers various hiking opportunities. Nearby areas like the Antioch/Oakley Regional Shoreline and Contra Loma Regional Park feature multi-use trails. For more information, consult the Hiking in Antioch Dunes National Wildlife Refuge guide.
Mountain biking is not permitted within the Antioch Dunes National Wildlife Refuge itself. However, the broader area provides options for mountain biking on trails outside the refuge boundaries. Explore available routes in the MTB Trails in Antioch Dunes National Wildlife Refuge guide.
Road cycling is not allowed inside the Antioch Dunes National Wildlife Refuge. Cyclists can find numerous road cycling routes in the surrounding region. Refer to the Road Cycling Routes in Antioch Dunes National Wildlife Refuge guide for options.
Yes, family-friendly hiking options are available in areas surrounding the refuge. These trails offer accessible experiences for various ages and skill levels. Find suitable routes in the Family-friendly hikes in Antioch Dunes National Wildlife Refuge guide.
Policies regarding dogs vary by specific park or trail system in the region surrounding the refuge. It is advisable to check local regulations for each trail. For dog-friendly options, consult the Dog-friendly hikes in Antioch Dunes National Wildlife Refuge guide.
Visits to Antioch Dunes National Wildlife Refuge are generally restricted to docent-led tours. These tours offer a unique opportunity to learn about the refuge's ecology and observe its endangered species. It is recommended to check the official U.S. Fish & Wildlife Service website for tour schedules and availability.
The region around Antioch Dunes National Wildlife Refuge has been explored by more than 600 komoot visitors. Routes in the area have an average rating of 4.72 out of 5 stars. This indicates a high level of satisfaction among users for the available outdoor activities.
Komoot offers several guides for outdoor activities in the region, including Hiking in Antioch Dunes National Wildlife Refuge, MTB Trails in Antioch Dunes National Wildlife Refuge, and Road Cycling Routes in Antioch Dunes National Wildlife Refuge. Other guides cover family-friendly, easy, and dog-friendly options, as well as touring and traffic-free cycling.
For official information and inquiries regarding Antioch Dunes National Wildlife Refuge, contact the U.S. Fish & Wildlife Service. The official website is fws.gov/refuge/antioch-dunes. The phone number for the managing complex is +1-510-377-9229.
The refuge is situated on relict sand dunes along the San Joaquin River. These dunes are remnants of a larger riverine sand dune ecosystem and vary in height from 0 to 50 feet. The sandy terrain provides a unique and isolated habitat for its endangered species.

