The Mistborn trilogy by Brandon Sanderson. If you like it, there's a sequel to the trilogy set several hundred years later: Alloy of Law.
The Night Angel trilogy by Brent Weeks. If you like it, there's a prequel novella: Perfect Shadow.
The Memory, Sorrow, and Thorn series by Tad Williams. These are a little longer than your criteria, especially the third book which is twice the length you're looking for. It's usually found split into two halves: To Green Angel Tower, Part 1 and To Green Angel Tower, Part 2.