No, not really. New York City is 468 square miles (or 1212 square kilometers).
Now, if you’re just talking about borough of Manhattan, well, that’s still an ambitious plan for any NYC walking tours and NYC bike tours, but it’s doable. What you could try doing is walking the length of Broadway, that’s 13 miles (or 21 kilometers) and Google Maps estimates it can be walked in 5 hours. You could begin far north at the historic, 18th century Dykeman Farmhouse and Museum and Broadway downtown finishing in South Ferry with a photo op at Wall Street’s Charging Bull statue. I’m not aware any NYC walking tours that offer this option, but I am happy to guide you in a private tour designed to appeal to your specific interests. Or I can refer you to one of my colleagues at the Guides Association of New York City if I’m unavailable.
Another option to break your step record is to join The Great Saunter. Every May, approximately 2,500 walking enthusiasts embark on a 32-mile (52-kilometer) walking tour of the perimeter of Manhattan. More information, and registration for the event can be found here.