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Data story · longest ranking

The longest audiobooks we measured: 101.8 hours at the top

At one hour of listening a day, the longest audiobook in our dataset takes 102 days to finish. The top 15, ranked by estimated listening hours.

By The Books Insider data desk · updated

101.8 hrsthe longest we measured
102days to finish at 1 hr/day
26days at 2× speed, 2 hrs/day

Ranked by estimated listening hours across all 2,000 audiobooks we measured, the top of the table is commitment territory: every book below runs 33.2 hours or more.

The top 15, ranked

The 15 longest audiobooks in our dataset (hrs)
  1. The Complete Harry Potter Collection (Books 1-7)by J. K. Rowling · fantasy101.8 hrs
  2. Shatter Me Complete Collectionby Tahereh Mafi · romance58.2 hrs
  3. The Hobbit and The Lord of the Ringsby J.R.R. Tolkien · fantasy47.3 hrs
  4. The Oxford Sherlock Holmes (Adventures of Sherlock Holmes / Case-Book of Sherlock Holmes / His Last Hour / Hound of the Baskervilles / Memoirs of Sherlock Holmes / Return of Sherlock Holmes / Sign of Four / Study in Scarlet / Valley of Fear)by Arthur Conan Doyle · mystery46 hrs
  5. A Suitable Boyby Vikram Seth · romance41.6 hrs
  6. Toll the houndsby Steven Erikson · fantasy37.8 hrs
  7. The Great Book of Amberby Roger Zelazny · fantasy37.2 hrs
  8. Oathbringerby Brandon Sanderson · fantasy36.8 hrs
  9. The Lord of the Ringsby J.R.R. Tolkien · fantasy35.3 hrs
  10. The Complete Works of William Shakespeareby William Shakespeare · romance34.7 hrs
  11. Itby Stephen King · thriller34.5 hrs
  12. The Standby Stephen King · thriller34.1 hrs
  13. Rhythm of Warby Brandon Sanderson · fantasy33.6 hrs
  14. The Hunger Games Trilogy (Hunger Games / Catching Fire / Mockingjay)by Suzanne Collins · romance33.6 hrs
  15. The Complete Sherlock Holmesby Arthur Conan Doyle · mystery33.2 hrs

For scale: the dataset's median audiobook runs 9.7 hours, so even the shortest book on this list is 3.4× the typical listen. The genre mix of the top 15: 7 fantasy, 4 romance, 2 mystery, 2 thriller.

3 of the top 10 are collected editions — complete series or collected works sold as a single audiobook — which is how the very top of the table breaks the 30-hour barrier.

The finish-time math

The finish-time math on #1: 101.8 hours means 102 days at an hour a day. Push to 2× speed and two hours a day, and it compresses to 26 days. Every book page on this site has a calculator for exactly this.

Epics are where the trial earns it

One free-trial audiobook covers a 101.8-hour epic the same as a 9.7-hour typical listen. Cancel anytime; the trial stays free.

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Methodology.Ranked by estimated listening hours, longest first. Dataset: 2,000 audiobooks measured by The Books Insider as of 2026-07-06. Listening hours are estimated from page counts (pages × 275 words ÷ 9,300 words/hour, ±10%) — full method on the About page.

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