Planning a Family Reunion in Antioch, CA

Why Antioch works for a reunion

Antioch gives a family space and quiet without cutting it off from the Bay Area. The city sits on the San Joaquin River in eastern Contra Costa County, at the edge of the Sacramento-San Joaquin Delta, and its neighborhoods have the kind of larger homes that hold three or four households under one roof.

That matters for a reunion, where the point is time together. In a dense city you pay for that time with parking fees, small rooms and restaurant waits. In Antioch the group can cook at home, sit outside after dinner and still ride BART toward Oakland, San Francisco and the airport when someone wants a city day.

The other draw is how close the outdoors is. East Bay Regional Park District runs three parks within a short drive of most Antioch neighborhoods: Contra Loma for reservable picnics, the Antioch/Oakley Regional Shoreline on the river, and Black Diamond Mines in the hills to the south. Mount Diablo State Park is a little farther.

The reunion at a glance

Each of the main outings suits a different part of a mixed-age family. Prices and hours below are from the park district and BART pages at the time of writing; check them before you go.

Parks and picnics

The biggest decision is where to hold the main reunion gathering, and the choice is between a reserved site at Contra Loma and the free tables on the river.

Contra Loma Regional Park

Contra Loma is the place to hold a reserved, all-day reunion picnic. The park district lists six reservable group sites there. Its smallest group sites hold 35 people and cost $60 for Alameda and Contra Costa County residents or $84 for non-residents, plus an $8 reservation fee and a $50 security deposit. The fee does not drop if your group is smaller than the site, so a family of 15 pays the same as a family of 35.

How booking works, from the park district's picnic page:

• Reservations cannot be made online. Call 1-888-EBPARKS (1-888-327-2757), option 2, Monday to Friday, 9am to 4pm. You can check availability online first.
• Book at least 3 days ahead. For a Saturday or Sunday, book by 4pm the Wednesday before.
• Full payment is due at booking.
• Arrive by 10am. After 10:30am an unclaimed site becomes first-come, first-served, even though you paid.
• No reservations are taken for Memorial Day, July 4th or Labor Day, so those sites go to whoever arrives first.
• At the time of writing, the district was taking picnic reservations through December 2026. For a 2027 reunion, call to ask when the next year opens.

Contra Loma's reservoir has a year-round fishing dock, and parking is $5 per vehicle. Two rules catch reunion planners out. Alcohol is not permitted at Contra Loma at any time, and bounce houses, petting zoos and amplified music are not allowed at district picnic sites. The swim lagoon is also closed, according to the park page, because of water quality and maintenance challenges.

Antioch/Oakley Regional Shoreline

For a relaxed afternoon by the water at no cost, the Antioch/Oakley Regional Shoreline is the easiest choice. It sits on the San Joaquin River just upstream from the Highway 160 bridge. Its 550-foot fishing pier is open 24 hours a day, year-round, and the park itself is open from 5am to 10pm unless posted otherwise.

Entry and parking are free. Picnic tables with barbecues sit in a meadow on wheelchair-friendly pads next to paved trails, and there is a wheelchair-friendly restroom. The tables are first-come and cannot be reserved, so send one or two people early with coolers to hold a cluster. Anyone 16 or older who fishes needs a California fishing license; our guide to Delta boating and fishing near Antioch covers licenses and rules.

Black Diamond Mines Regional Preserve

Black Diamond Mines is the best half-day outing for school-age kids and anyone who likes history. The preserve runs 30-minute coal mine tours on Saturdays and Sundays year-round. Participants must be at least 7 years old, tour groups are limited to 15 people, and the park district says advance reservations are highly recommended. The route is about a quarter mile on flat, hard-packed dirt, plus the walk to and from the visitor center.

The Greathouse Visitor Center is free and open Fridays from 10am to 2pm and weekends from 10am to 4pm. Parking is $5 per vehicle when the kiosk is staffed. Dogs are not permitted on mine tours, and cell coverage varies in the preserve, so agree on a meeting time before people split up.

Food: cook at home, eat out once

The meals that make a reunion are usually the ones at home. A large rental has a full kitchen, and a family that cooks breakfasts and two big dinners spends far less than twelve or fifteen people eating every meal out, and talks more while doing it.

A plan that works for most families:

1. Assign each household one dinner. One family does tacos, one does a barbecue, one does a pasta night. Nobody spends the whole weekend in the kitchen.
2. Do one big grocery run on arrival. Make a shared list in the group chat a week ahead so there is one trip, not five.
3. Eat out once. Pick one lunch or dinner out, reserve a table well ahead for any group over eight, and accept that a large group may be split across two tables.
4. Plan picnic food that travels. Sandwiches, fruit, salads and a grill for the park day. Remember there is no alcohol at Contra Loma.

Antioch's downtown Rivertown district along the river has local restaurants for the night out, and in late spring and summer the farms in neighboring Brentwood sell fruit at farm stands and U-pick fields. Each farm posts its own calendar, so check before you go.

Bay Area day trips

Give the family one optional day away from Antioch, and let people choose whether to go. Older relatives and young children often prefer a quiet day at the house, while teenagers and younger adults want the city.

San Francisco and Oakland by BART. Antioch is the end of BART's yellow line, with service toward San Francisco International Airport and Millbrae. Riders change trains at a transfer platform between Pittsburg Center and Pittsburg/Bay Point, where you walk from one train to the other. Daily parking at Antioch station is $3.40, and BART says there is capacity at all times. Check BART's trip planner for times on your day. Our guide to staying in Antioch to visit the Bay Area has a sample city day.

Mount Diablo. A road leads to the summit area, so relatives who can't hike can share the view while others take the trails. See Mount Diablo State Park with a group.

Wine country. Livermore Valley and Napa are day trips by car for the adults in the group. Pick a designated driver or book a car service.

For more local ideas, see things to do in Antioch with a group and the events calendar at What's on in Antioch.

A sample reunion weekend

Example: a Friday to Sunday reunion for 15 people across four households, three generations.

Paid costs for that plan are small: a picnic site fee and deposit, a few $5 parking fees, and BART fares for those who go to the city. The house and the food are the real budget. Our guide to splitting costs on a group vacation rental covers how to divide them fairly.

Where to stay

One house for the whole family is what turns a set of outings into a reunion. Hotel rooms split the group by floor and leave nowhere to gather at night.

Our Antioch homes include The Antioch House, with six bedrooms, two full bathrooms and room for up to 15 guests. It has a fireplace in the living room, a coffee bar with an espresso machine, a full kitchen, washer and dryer access, an outdoor seating area, garage and on-site parking, and smart-lock self check-in. Its dining table seats six, so for a full-house dinner plan two tables or eat outside.

Families can bring up to 3 pets for a $100 pet fee per stay, and service animals are free. For direct bookings, our Check-in Promise says: "If your group can't get into the home at check-in and we can't get you in within one hour of your call, we refund your first night."

For the planning itself, our step-by-step guide to how to plan a family reunion and our family reunions page cover timelines, budgets and rooms.

The bottom line

Antioch suits a family that wants space, easy outdoor days and the Bay Area within reach. Book the house first, reserve a Contra Loma picnic site by phone at least 3 days ahead (by the Wednesday before a weekend), and remember it is alcohol-free and the lagoon is closed. Add a mine tour for the kids, a free afternoon at the river pier, and one long dinner at home.