City College Professor of Sociology Bill Helmreich decided one day to start walking his City. He started small, but kept at it, and over the next 4 years, Helmreich had walked every street in New York City — a total of 6,000 miles or about 121,000 blocks. How did he do it? Helmreich explains:
You do it one step at a time. 30 miles a week, 120 a month, 1500 a year, presto! 4 years go by and you did it.
Helmreich has written a book about his explorations titled The New York Nobody Knows: Walking 6,000 Miles in the City and it is available on Amazon for about $20.