Walk south on Grant to Market Street. (You can also walk west one block to Stockton and catch the 30 or 45 bus to Market, but it s probably quicker and more enjoyable to walk.) If you walk, it s nicer to go down Grant, because Stockton Street takes you through a tunnel.At Market, you have two choices:1) Catch the F streetcar (historic cars) traveling toward Castro (southwest), and take it to the end of the line. This runs at street level, and ends at 17th Street near the corner of Castro and Market. You ll get views of the most blighted part of Market Street, but the neighborhood improves as you approach Castro.2) Walk southwest on Market a short distance until you come to a stairway down to the underground Powell Street MUNI/BART station. (There are entrances on Market near Fourth Street, before you get to Powell.) Take the MUNI Metro K, L, or M line *outbound* to the Castro Station. (Don t take the J or N -- they don t stop at Castro. Also, make sure you re catching an outbound train, and not inbound.) Castro will be the fourth stop, after Civic Center, Van Ness, and Church Street.Option #2 is faster, but option #1 uses MUNI s interesting collection of historic streetcars. No matter how you do it, it costs $2 (unless you have a MUNI pass). If you take a bus down Stockton, make sure you save the transfer to use on the next part of the trip.---Silvermist s suggestion that you walk from Chinatown to the Castro is very bad advice. It s about 2.75 miles or longer (roughly a 55-minute walk), but the route takes you through one of the most crime- and drug-infested neighborhoods of the city (the Tenderloin, and Market Street between about 5th and 8th).For the most part, San Francisco is a great walking city, and most neighborhoods are pretty safe, but this is an exception. It s an area that most people want to avoid. At best, you ll have an unpleasant walk; at worst, you ll get mugged. I strongly recommend that you take advantage of MUNI instead.
no need to pay for an expensive cabride- walk south to Market street and catch the F line to the castro.
I walk.