The Stormlight Archive

The Stormlight Archive books (only 2 out of a planned 10 last I heard) are 2 of the longest books out there, and I read on my Kindle and did not realize they were so long until I realized I was some 15 hours in and ~50% done IIRC. I was so engrossed, I hadn't cared. I got the 2nd one the day it came out and read it in about 10 days despite my busy schedule (sleep was sacrificed). - @CWSpear