Route:
M21 Lower East Side - West Village
via Houston St Crosstown
- Choose your direction:
 - to LOWER E SIDE GRAND-FDR CROSSTOWN
 - to SOHO WASHINGTON ST CROSSTOWN
 
M21 to LOWER E SIDE GRAND-FDR CROSSTOWN
No scheduled service for the M21 to LOWER E SIDE GRAND-FDR CROSSTOWN at this time.
- SPRING ST/GREENWICH ST
 - SPRING ST/HUDSON ST
 - 6 AV/SPRING ST
 - 6 AV/PRINCE ST
 - WEST HOUSTON ST/AVENUE OF THE AMERICAS
 - WEST HOUSTON ST/SULLIVAN ST
 - WEST HOUSTON ST/WEST BROADWAY
 - WEST HOUSTON ST/GREENE ST
 - EAST HOUSTON ST/LAFAYETTE ST
 - EAST HOUSTON ST/MOTT ST
 - EAST HOUSTON ST/BOWERY
 - EAST HOUSTON ST/FORSYTH ST
 - EAST HOUSTON ST/ESSEX ST
 - EAST HOUSTON ST/NORFOLK ST
 - EAST HOUSTON ST/CLINTON ST
 - EAST HOUSTON ST/RIDGE ST
 - EAST HOUSTON ST/COLUMBIA ST
 - EAST HOUSTON ST/BARUCH DR
 - EAST HOUSTON ST/MANGIN ST
 - FDR DR/555 FDR DR
 - GRAND ST/FDR DR
 
M21 to SOHO WASHINGTON ST CROSSTOWN
No scheduled service for the M21 to SOHO WASHINGTON ST CROSSTOWN at this time.
- GRAND ST/FDR DRIVE
 - LEWIS ST/GRAND ST
 - DELANCEY ST/COLUMBIA ST
 - COLUMBIA ST/RIVINGTON ST
 - COLUMBIA ST/HOUSTON ST
 - EAST HOUSTON ST/AV C
 - EAST HOUSTON ST/AV B
 - EAST HOUSTON ST/AV A
 - EAST HOUSTON ST/1 AV
 - EAST HOUSTON ST/2 AV
 - EAST HOUSTON ST/BOWERY
 - EAST HOUSTON ST/MOTT ST
 - EAST HOUSTON ST/CROSBY ST
 - WEST HOUSTON ST/GREENE ST
 - WEST HOUSTON ST/LAGUARDIA PL
 - WEST HOUSTON ST/SULLIVAN ST
 - WEST HOUSTON ST/VARICK ST
 - WEST HOUSTON ST/HUDSON ST
 - WEST HOUSTON ST/VARICK ST
 - WASHINGTON ST/WEST HOUSTON ST
 - SPRING ST/GREENWICH ST
 - 6 AV/SPRING ST