BART (Bay Area Rapid Transit) trains, which run until midnight, travel under the bay via tunnel to connect San Francisco with Oakland, Berkeley, and other cities and towns beyond. Within San Francisco, stations are limited to downtown, the Mission, and a couple of outlying neighborhoods.
Trains travel frequently from early morning until evening on weekdays. After 8 pm weekdays and on weekends there's often a 20-minute wait between trains on the same line. Trains also travel south from San Francisco as far as Millbrae. BART trains connect downtown San Francisco to San Francisco International Airport; the ride costs $8.25.
Intracity San Francisco fares are $1.85; intercity fares are $3.80 to $11.65. BART bases its ticket prices on miles traveled and doesn’t offer price breaks by zone. The easy-to-read maps posted in BART stations list fares based on destination, radiating out from your starting point of the current station.
During morning and evening rush hour, trains within the city are crowded—even standing room can be hard to come by. Cars at the far front and back of the train are less likely to be filled to capacity. Smoking, eating, and drinking are prohibited on trains and in stations.
Bay Area Rapid Transit (415/989–2278. www.bart.gov.)