Last September, Stephanie and Tim Reed biked out their Oakland front door and pedaled to the Bay Trail, a 21-year effort to create a continuous, 500-mile hiking and biking trail along the shoreline of the San Francisco Bay, linking the area’s nine counties. With 298 miles completed, the trail is a work in progress with pieces added in chunks, each addition attended by some civic hoopla. Last November, a deal between Chevron and the East Bay Regional Parks District will add two more miles along Point Molate in Richmond, The San Francisco Chronicle reported.