Once in downtown Walnut Creek, walking is basically your only choice. This shouldn't pose a problem because most of the downtown area is somewhat concentrated 10-15 minute walk at most. The biggest problem is parking.
Driving
Most will use a car to get around Walnut Creek. Be careful of pedestrians; they tend to jump off corners when you least expect it.Parking
Hidden among the storefronts are countless garages. The garages run by the City charge actual money; whereas the garages of the many malls are free but claim to be valid for only three hours. The garages closest to Broadway Plaza are the most congested. You can usually find ample parking in the Plaza Escuela garage on either side of Locust at Botelho, only one block from downtown and Broadway Plaza.Hint. Try parking on the street - the street meters cost the same as the garages. If you do park on the street, make sure you put enough money in the meter because Walnut Creek metermaids continually circle the town looking to increase the city coffers at your expense. The best hint for using the street meters is to arrive early, you may have to circle and you won't find a spot right in front of any place you're interested in visiting.