The ideal length of time to plan for a Food on Foot Tour in New York City is approximately 3 hours. This allows you to fully immerse yourself in the culinary delights of the city while also getting a taste of its vibrant neighborhoods. During the tour, you'll have the opportunity to sample a variety of delicious foods, learn about the city's history and culture, and explore hidden gems that you might not have discovered on your own. So, make sure to set aside a few hours to indulge in this unique and tasty experience!