This list of 5 Fantasy Books With Over 1000 Pages includes only books that are the first in a series or collect a full story, so no sequels, etc.
The Way of Kings (The Stormlight Archive, #1) by Brandon Sanderson
From the blurb:
According to mythology mankind used to live in The Tranquiline Halls. Heaven. But then the voidbringers assaulted and captured heaven, casting out God and men. Men took root on roshar, the world of storms. And the Voidbringers followed …
Jonathan Strange & Mr Norrell by Susanna Clarke
From the blurb:
The year is 1806. Centuries have passed since practical magicians faded into the nation’s past. But scholars of this glorious history discover that one remains: the reclusive Mr Norrell, whose displays of magic send a thrill through the country. Proceeding to London, he raises a beautiful woman from the dead and summons an army of ghostly ships to terrify the French.…
The Lord of the Rings by J.R.R. Tolkien
From the blurb:
Sauron, the Dark Lord, has gathered to him all the Rings of Power – the means by which he intends to rule Middle-earth. All he lacks in his plans for dominion is the One Ring – the ring that rules them all – which has fallen into the hands of the hobbit, Bilbo Baggins.…
Ash: A Secret History (Book of Ash, #1-4) by Mary Gentle
From the blurb:
In an alternate fifteenth-century Europe, Visigoths are threatening to destroy Burgundy, the crown jewel of Europe, and Ash, a Joan of Arch-style woman warrior, will fight to save it…
The Witching Hour (Lives of the Mayfair Witches, #1) by Anne Rice
From the blurb:
On the veranda of a great New Orleans house, now faded, a mute and fragile woman sits rocking. And the witching hour begins…
Demonstrating once again her gift for spellbinding storytelling and the creation of legend, Anne Rice makes real for us a great dynasty of witches – a family given to poetry and incest, to murder and philosophy, a family that over the ages is itself haunted by a powerful, dangerous, and seductive being….