The best parks & outdoor spots in Union City

10 parks & outdoor spots we’ve checked and stand behind — with the story on each one. Not a ranking; a record.

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Parks & Outdoors · 10 places · showing the latest additions first

Five Canyons Park

Parks & Outdoors

Over 300 acres of lush outdoor space, offering hiking trails with canyons, scenic views & wildlife.

25852 Five Canyons Pkwy (Castro Valley)

Over 300 acres of lush outdoor space, offering hiking trails with canyons, scenic views & wildlife.

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Five Canyons Open Space

Parks & Outdoors

Hilly 300-acre ridge & valley park with rich flora, canyons & hiking & biking trails.

5909 Gold Creek Dr (Castro Valley)

Hilly 300-acre ridge & valley park with rich flora, canyons & hiking & biking trails.

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101-acre park featuring a lagoon with swimming & fishing, plus wildlife & waterfront trails.

22400 Woodroe Ave (Hayward)

101-acre park featuring a lagoon with swimming & fishing, plus wildlife & waterfront trails.

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Hayward Japanese Gardens

Parks & Outdoors

This 3+-acre botanical garden features traditional Japanese arrangements, a teahouse & a koi pond.

22373 N 3rd St (Hayward)

This 3+-acre botanical garden features traditional Japanese arrangements, a teahouse & a koi pond.

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Urban, lakeside retreat offering swim & picnic areas, a fishing dock, trails & playgrounds.

6500 Broadway (Oakland)

Urban, lakeside retreat offering swim & picnic areas, a fishing dock, trails & playgrounds.

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McLaren Park Trails

Parks & Outdoors

Large forested park featuring scenic hilltop viewpoints, tennis courts and a playground.

2075 Burrows St (San Francisco)

Large forested park featuring scenic hilltop viewpoints, tennis courts and a playground.

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Alemany Farm

Parks & Outdoors

Expansive farm run by the community, offering internships, classes & volunteer opportunities.

700 Alemany Blvd (San Francisco)

Expansive farm run by the community, offering internships, classes & volunteer opportunities.

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John McLaren Park

Parks & Outdoors

312-acre park featuring a golf course, a pool & an amphitheater, plus 7 miles of walking trails.

100 John F Shelley Dr (San Francisco)

312-acre park featuring a golf course, a pool & an amphitheater, plus 7 miles of walking trails.

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Old Alvarado Park

Parks & Outdoors

Old Alvarado Park keeps things simple in the best way. Reserve the gazebo through Union City Community & Recreation Services this week,…

3871 Smith St

Old Alvarado Park keeps things simple in the best way. Reserve the gazebo through Union City Community & Recreation Services this week, round up your crew, and turn an ordinary afternoon into a chill neighborhood hang with shade, fresh air and zero fuss... just you, good company and a comfy spot to kick back.

From the Union City newsletter, August 4, 2026

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Ardenwood Historic Farm

Parks & Outdoors

A working farm with a train & crops grown using historic methods, plus volunteers in period attire.

34600 Ardenwood Blvd (Fremont)

A working farm with a train & crops grown using historic methods, plus volunteers in period attire.

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