Another long English - language novel could be 'Infinite Jest' by David Foster Wallace. It's a complex and lengthy work that challenges readers with its nonlinear narrative, extensive footnotes, and a wide range of themes from addiction to entertainment. The book is filled with detailed character studies, and Wallace's unique writing style, which includes long, meandering sentences and digressions, makes it a very long read.
One of the contenders for the longest published English novel is 'Clarissa' by Samuel Richardson. It is extremely long and is known for its detailed exploration of characters and society in 18th - century England.
Some might consider 'Les Misérables' by Victor Hugo (translated into English) as a very long English - language novel. It's a vast epic that delves into the lives of many characters, set against the backdrop of French history. The story is rich with themes of justice, love, and redemption. It's so long that it has been abridged in many versions, but in its full form, it is a tome. The detailed descriptions of Paris, the characters' inner thoughts, and the complex plotlines all contribute to its length.