Is NYC close to Boston?

Excuse me, could you please clarify for me the distance between New York City and Boston? I'm trying to plan a trip and I'm wondering if they're relatively close to each other or if it's a significant journey. I'm aware that they're both located in the northeastern United States, but I'm not sure of the exact distance or how long it would take to travel between the two cities. Could you provide me with some insight into this? Thank you in advance for your help.