Frodo sails west to the Undying Lands at the end of The Lord of the Rings , after returning briefly to the Shire. He goes because the wounds from the Ring, the Morgul-blade, and Shelob never fully heal, so the West offers him peace and recovery.

What happens to him

He does not stay in the Shire like Sam. Instead, Frodo leaves Middle-earth with Bilbo, Gandalf, and other Elves from the Grey Havens, heading to Valinor, also called the Undying Lands.

Why he leaves

Frodo is still physically and emotionally scarred by the quest. The story source says his old injuries keep returning, especially on their anniversaries, and that this ongoing pain is why he accepts passage west.

Simple version

  • He destroys the One Ring.
  • He returns home for a short time.
  • He cannot fully recover in Middle-earth.
  • He sails west for healing and peace.

If you want, I can also explain what the Undying Lands are and whether Frodo becomes immortal there.