Book · Thrillers and mysteries
The Sum of All Fears
by Tom Clancy
Page count, estimated reading time and reading quiz: everything to know before you start The Sum of All Fears, and the Vread challenge to get to the end.
- Pages
- 1,199
- Reading time
- ≈ 21 h 40 min
- Checkpoints
- 33
- Genre
- Thriller
Free on iPhone and Android.
How long does it take to read The Sum of All Fears?
At 1,199 pages, The Sum of All Fears is a doorstopper. Expect about 21 hours 40 minutes of reading to finish it, based on 250 words per page and an average reading speed of 230 words per minute. A fast reader will go quicker; a careful read (or reading in a second language) will take longer.
At 30 minutes a day, that is about 44 days of reading. At the median pace of Vread readers, 72 pages per reading day, it takes 17 reading days. For a book of this length (600 pages or more), Vread readers who finish it take a median of 6.4 days between the first and the last checkpoint (Vread Reading Barometer 2026).
- 30 minutes a day44 days
- Vread median pace (72 pp./day)17 days
Estimates; see the method at the bottom of the page.
Prove you read it
The Vread challenge: 33 checkpoints
- Checkpoint 1, page 36
- Checkpoint 2, page 73
- Checkpoint 3, page 109
- Checkpoint 4, page 145
- Checkpoint 5, page 182
- Checkpoint 6, page 218
- Checkpoint 7, page 254
- Checkpoint 8, page 291
- Checkpoint 9, page 327
- Checkpoint 10, page 363
- Checkpoint 11, page 400
- Checkpoint 12, page 436
- Checkpoint 13, page 472
- Checkpoint 14, page 509
- Checkpoint 15, page 545
- Checkpoint 16, page 581
- Checkpoint 17, page 618
- Checkpoint 18, page 654
- Checkpoint 19, page 690
- Checkpoint 20, page 727
- Checkpoint 21, page 763
- Checkpoint 22, page 799
- Checkpoint 23, page 836
- Checkpoint 24, page 872
- Checkpoint 25, page 908
- Checkpoint 26, page 945
- Checkpoint 27, page 981
- Checkpoint 28, page 1017
- Checkpoint 29, page 1054
- Checkpoint 30, page 1090
- Checkpoint 31, page 1126
- Checkpoint 32, page 1163
- Checkpoint 33, page 1199
In Vread, The Sum of All Fears is split into 33 checkpoints, one every 36 pages or so. At each checkpoint, a question covers the passage you have just read: a correct answer validates the step, and your progress moves forward like a training plan.
The challenge: validate all 33 checkpoints through to the last page. No giant quiz at the end, no summary to copy out: short questions along the way that prove the book was actually read. It also works as a reading quiz to check your understanding before a test.
Also available in French on Vread.
Illustrative example
What a checkpoint looks like
A short, precise question about the pages you have just read: a character, a place, a choice.
The answer is in the text: reply in the app.
This is not a question from The Sum of All Fears: to avoid spoilers, the real questions stay in the app.
Answer in the app, one checkpoint at a time.
Summary, quiz, reviews: frequently asked questions
How many pages is The Sum of All Fears?
How long does it take to read The Sum of All Fears?
Is there a quiz on The Sum of All Fears?
Where can I find a summary of The Sum of All Fears?
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Read The Sum of All Fears with Vread
Add the book to your library, read at your own pace in whatever format you use, and validate each checkpoint. Vread is free on iPhone and Android.
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