BART
We highly encourage everyone to Bart to the Powell Street Bart Station and walk a short distance to Union Square. Traffic into San Francisco on a Saturday tends to get really bad between 11 a.m and 3 p.m.
From the Bay Bridge:
Take the Fremont Street exit to Mission Street and turn left onto Mission Street turn right at Third Street and as you cross Market Street make a left onto Geary Street. Stay on Geary Street and as you cross Stockton Street Union Square Park will be on your right hand side and Macy's on your left.
From 280 North:
Exit 6th Street, continue on North on 6th Street to Howard Street, go left on Howard one block, at 7th Street go north to McAllister Street and make an immediate right onto Leavenworth Street. Stay on Leavenworth until O'Farrell Street where you will turn right and continue until you cross Powell Street and Macy's will be on your left and Union Square Park will be on the other side of Macy's on Geary Street, parallel to O'Farrell.
From the Golden Gate Bridge:
After bridge proceed to Lombard Street exit, Follow Lombard to Van Ness (101south) go right on Van Ness, continue on to O'Farrell Street, Left on O'Farrell Street. When you cross Powell Street, Union Square Park will be on your left and Macy's on your right.