In the books, Gandalf even suggests that Treebeard is the oldest living creature in all of Middle-earth. If Treebeard dates back to the First Age, this would make him as much as 25,000 years old by the events of The Two Towers.
Treebeard, referred to as the oldest living thing in Middle-earth by Gandalf, has been around since the First Age and is estimated to be 17,000 - 25,000 years old, making him the oldest of any race.
Who is the oldest living thing in the Middle-earth?
As Gandalf said, Treebeard is the "oldest living thing" in Middle-earth. Tom Bombadil, on the other hand, is technically older, but he's also otherworldly. So, even though Bombadil is older, he doesn't exactly count.
Legolas was portrayed by Orlando Bloom. In the "official movie guide" for The Lord of the Rings, a birthdate for Legolas is set to 87 of the Third Age. This would make him 2931 years old at the time of the War of the Ring.
Elves have the longest known lifespans in the known worlds. The length of their lives often surpasses even the ancient trees, although the elves typically leave the lands known to humans before reaching 1000 years. Some have been known to stay for as long as 1200 years, but very few remain after that time.
He died at the age of 210, after 122 years as king. The graves of the hobbits Merry and Pippin (who had died in Gondor 58 years earlier) were set beside his. He was succeeded on the throne by his son, Eldarion. Arwen, heartbroken by the loss of her husband, died shortly afterwards in Lothlórien.
We know now that he lived from IV 43 (a date already known) to IV 168, for a total of 125 years. This also informs us that Findegil completed his copy of the Red Book of Westmarch after Eldarion's death (in 172 IV, according to LotR), so this task had probably been commissioned by Eldarion's successor.
Galadriel leaves Middle-earth in TA (Third Age) 3021 when she is around 8,000 years old. Given that the events of The Rings of Power take place before the Third Age, she's around 5,000 years old in the show. This is also corroborated by her birth date in Valinor of 1362 in the "Years of the Trees".
What is the oldest thing on Earth that is still alive?
The Great Basin Bristlecone Pine (Pinus longaeva) is a species of pine tree. It is found in the American West, mostly in Utah, Nevada, and California. One of these trees has been measured to be over 4,850 years old!
Given how long he has known Gandalf and the fact that he speaks with seniority over him for the majority of their interactions, it can be inferred that, while they are estimated to be around the same age, Saruman is older. This would place him at roughly fifty-five thousand years old.
One of those specimens, a clam, was nicknamed 'Ming' and ended up being the oldest recorded animal ever at 507 years old! To put that in perspective, when it was born, the Ming dynasty ruled China (hence the nickname) and Henry VIII was nine years away from becoming King of England.
The oldest-living recorded hobbit (except Gollum and Bilbo Baggins, whose lives were extended by the power of The One Ring) was The Old Took, who reached the age of 130. By nature they were of gentle disposition, neither cruel nor vindictive.
When you realize that Galadriel is about 8.000 years old and Gandalf at least 55.000 years, and has looked like an old wizard for the last 2.000 of them. It really changes the scene, its a joke between old friends. And when Treebeard calls him "Young Master Gandalf" in ROTK...
Aragorn's mother, Gilraen, was one of the Dúnedain - the line of Men descended from Aranath, the last king of Arnor. Her father was Dírhael, and he was good friends with Ardor, the Dúnedain Chieftain and Aragorn's grandfather.
However, he does not possess the ability to live forever, and he cannot choose to be mortal or immortal like Arwen, the half-Elf he loves and eventually claims as his wife. Because Aragorn is mortal and Arwen chose to remain in Gondor and become mortal, their son, Eldarion, is mortal as well, despite his Elven lineage.
Aragorn's age in The Lord of the Rings is 87, thanks to his Dúnedain heritage. The Dúnedain have longer lifespans than ordinary men, but not as long as Elves.
Isildur's father was Elendil, descended from Elros, founder of the Kingdom of Númenor. Since Elros was half-elven, from the marriage of Beren to the elf Lúthien, he and his descendants enjoyed much longer life than other men.
Dwarves were long-lived, with a lifespan of some 250 years. They breed slowly, for no more than a third of them are female, and not all marry. Tolkien names only one female, Dís, Thorin's sister. They are still considered children in their 20s, as Thorin was at age 24; and as "striplings" in their 30s.
Are any of the elves who first awoke Cuiviénen still around by the time of LOTR? The oldest elf in LoTR is Círdan the Shipwright, the oldest Elf still remaining in Middle-Earth, who appears at the end of Return of the King to sail to Valinor.
Because each Age counts its years from scratch, and because the First Age lasted 587 years and the Second 3441, Elrond must be approximately 6437 years old in The Hobbit. Because of his advanced age, Elrond's role in the history of Middle-earth can scarcely be overstated.
