You can take either the 4 or B/D, both of which run express in Manhattan, and will get you to 42nd St (either Grand Central on the 4 or Bryant Park on the B/D). During rush hour, bear in mind the D skips this subway stop, so you'll need to take the B local.
Unique things to do nearby
4.95 (1,886)
The Full-Day "See It All" NYC Tour!
4.99 (298)
Times Square Night-time Edition Photoshoot
4.88 (716)
Private Photoshoot in the World Famous Time Square