Grab your costume and head here for the World Famous Halloween Pub Crawl, San Francisco Edition. Ticket prices start at $10 for this event, which kicks off at Extreme Pizza and continues into the Marina District. On Saturday, October 26 and Thursday, October 31, you can trick -or-treat throughout the neighborhood for sweet drink specials to get into the Halloween spirits.
For a great deal on this dress-up drinking fun, opt for the 2-day pass to participate in both events. You can find more details about tickets and drink deals here: https://www.sfgate.com/thingstodo/
But the frightful fun doesn't end there. You can find haunted houses, shopping events, carnivals, and costume parties throughout the city all week long. Yoshi's San Francisco is hosting the DJ Event Freaks & Beats 2013. At Boom Boom Blues, you can pay homage to a legendary band at Naïve Melodies - Talking Heads Halloween Bash. Or, see what's happening at Slim's for Boograss: Halloween Hillbilly Hoedown. There's a long list of fun things to do in San Francisco this October, and you can plan your visit here: https://www.partyearth.com/san-francisco/holidays/halloween-7/.