Fastest Way to Hudston St. from Grand Central Terminal?

Question

Well, it doesn't have to be the fastest, but which subway lines would take me to within walking distance to Hudson St, without taking a bus? :)

Answer 1

Where on Hudson Street?  

Take the 42nd Street Shuttle  ("S" train) to Times Square, then take a downtown 1, 2 or 3 (numbers in red circles) to:

14th St  - for addresses in the mid to high 600's. This is the northern point of Hudson Street (it ends at 14th St).  You have to walk 3 blocks west from the subway station

Take the #1 downtown from 14th St to:

Christopher Street  - for  addresses 500 and up.  Walk 2 blocks west from the subway station.

Houston Street -  for addresses 388 and up.  Walk one block west from the subway station.

Canal Street -  for addresses  200 and up.  Walk 1 1/2 blocks (small blocks) west from the subway station.

Chambers Street (the 1,2 and 3 trains stop here)  - Hudson Street starts here.  Walk 1 block west from the subway station.

The 1 is a local, the 2 and 3 trains are express.

BTW - west from the subway station would be toward the Hudson River.