From the Peninsula:

1. 101 NORTH to 80 EAST/ BAY BRIDGE

2. EAST 80/ BAY BRIDGE to 580-EAST

3. Take the 24-EAST exit toward Walnut Creek

4. 680 NORTH via the exit on the Left toward Concord

5. Take Highway 242 NORTH toward Concord

6. Merge to Highway 4 EAST (on the Left)

7. Exit Railroad Ave North

8. There will be a construction detour on Railroad, when you reach it Turn Right

9. Turn Left on Cumberland (1 block down)

10. Turn Left on 3rd

11. Turn Right on Marina

12. Follow Marina to Harbormasters (on your right)

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