How do you get from the 6 train to the D train on the New York City subway system?

You have a total of five options (four in Manhattan, and one in The Bronx):

1) Take the 6 train to 14th Street-Union Square.

2) Transfer at 14th Street-Union Square to the westbound (Manhattan-bound) L train.

3) Take the L train one stop to 6th Avenue (at 14th Street).

4) Transfer at 6th Avenue & 14th Street to the Uptown F or M trains.

5) Take the Uptown F or M to 42nd Street-Bryant Park.

6) Transfer at 42nd Street-Bryant Park to the D.

1) Take the 6 train to 59th Street.

2) You can transfer from the 59th Street Station on the 4-5-6 to the F train at 63rd Street-Lexington Avenue (however, note that you will have to pay two separate fares, unless you pay by Metrocard).

3) Take the Downtown (Manhattan-bound) F train from 63rd Street-Lexington Avenue to 47th-50th Street-Rockefeller Center.

4) Transfer at Rockefeller Center to the D train.

1) Take the Downtown 6 train to Bleeker Street.

2) From the Downtown 6 only (NOT the Uptown 6) you can transfer from the Bleeker Street Station to the Broadway-Lafayette Station.

3) Get the D train at Broadway-Lafayette.

1) Take the 6 train to 51st Street.

2) Transfer at 51st Street to the Downtown(Manhattan-bound) E train.

3) Take the E train to 42nd Street-Port Authority Bus Terminal.

4) Transfer at 42nd Street-Port Authority to the Uptown Aor C trains.

5) Take the Uptown A or C to 59th Street-Columbus Circle.

6) Transfer at 59th Street-Columbus Circle to the Dtrain.

1) Take the 6 train to 125th Street in Manhattan.

2) Transfer at 125th Street to the Uptown 4 train.

3) Take the Uptown 4 train to 161st Street-Yankee Stadium.

4) Transfer at 161st Street-Yankee Stadium to the Dtrain.

See the Related Link below for a complete New York City subway map.