What happens to Elrond?

Could you please elaborate on the fate of Elrond? I'm particularly interested in understanding what transpires in his storyline. Does he encounter any significant challenges or obstacles? How does he overcome them? Are there any noteworthy transformations or revelations in his character arc? Additionally, could you provide some insight into his relationships with other characters, specifically those that might have a profound impact on his journey? Finally, how does his story contribute to the overall narrative of the tale?