The most accurate way to view Naruto is not as a single show with many seasons, but as two separate shows that tell one continuous story.
The seasons in "Naruto Shippuden" can be outlined as follows:
Regardless of how you count the seasons, the journey is an epic one, taking viewers from a mischievous outcast's first day in school all the way to the battle to save the world.
(And this does not even include Boruto: Naruto Next Generations , the sequel series which continues the story with over 290 episodes and counting.)
"Naruto Shippuden," the sequel series, aired from February 15, 2007, to October 5, 2017. It spans 500 episodes, significantly longer than the original. The series takes place two and a half years after the original Naruto series and follows the characters as they face more mature challenges.
This covers the childhood and early teen years of the protagonist, Naruto Uzumaki. It consists of 220 episodes.