Step 1 : Introduction to the question "How many miles long is Manhattan?"
...Manhattan is 13.4 miles long. In spite of its size, Manhattan has a population of over 1. 6 million people. On business days, the influx of commuters increases this number to over 3.9 million. Manhattan Island is loosely divided into Downtown (Lower Manhattan), Midtown (Midtown Manhattan), and Uptown (Upper Manhattan), with Fifth Avenue dividing Manhattan lengthwise into its East Side and West Side. Manhattan Island is bounded by the Hudson River to the west and the East River to the east. To the north, the Harlem River divides Manhattan Island from the Bronx and the mainland United States.