The distance between Lexington Avenue and 5th Avenue (the east side of Central Park) is 1542.86 feet (0.29 miles), or 470.26 meters (0.47 km).
They are about a mile apart. Grand Central Station is on East 42nd Street and Lexington Avenue, and the heart of Times Square is West 42nd Street and 7th Avenue. They are 5 avenue blocks apart. Normally, 3 to 4 avenue blocks equals a mile, but at 42nd Street, the distance between one of the blocks (Park Avenue to Lexington Avenue) is abnormally short.
Five, not counting Broadway, which cuts between avenue blocks: 8th ---> 7th ---> 6th ---> 5th ---> Madison ---> Park ---> Lexington.
The address 1799 Lexington Avenue is in the 10029 zip code.
The Port Authority Bus Terminal is at 8th Avenue, from West 40th to West 42nd Street. Grand Central Station is at East 42nd Street between Park and Lexington Avenues. So you just walk west on 42nd Street to 8th Avenue. You will know you're going west because the avenue numbers should be getting larger, not smaller (i.e., 3rd, 2nd and 1st Avenues are east of Lexington). After you walk from Lexington to Park, the next avenue you reach is Madison Avenue, then 5th, then 6th, then Broadway, 7th and 8th.
Lexington Avenue Tunnel was created in 1918.
Greene Avenue - BMT Lexington Avenue Line - ended in 1950.
Tompkins Avenue - BMT Lexington Avenue Line - was created in 1885.
Reid Avenue - BMT Lexington Avenue Line - was created in 1885.
Reid Avenue - BMT Lexington Avenue Line - ended in 1950.
Tompkins Avenue - BMT Lexington Avenue Line - ended in 1950.
Broadway runs diagonally through virtually the entire length of Manhattan (over 13 miles), so it's impossible to estimate travel time without knowing the specific cross street (or at least, the neighborhood) you're going to. Grand Central is on 42nd Street between Park and Lexington Avenues. At this point in its path, Broadway is 1 very tiny block east of 7th Avenue. This area -- the tiny block between 7th Avenue and Broadway at 42nd Street -- is Times Square. So Broadway is 4 blocks west of Grand Central: Park Avenue ---> Madison Avenue ---> 5th Avenue ---> 6th Avenue ---> Broadway.
BMT Lexington Avenue Line was created in 1885.