Book · Romance
Onyx Storm
by Rebecca Yarros
Page count, estimated reading time and reading quiz: everything to know before you start Onyx Storm, and the Vread challenge to get to the end.
- Pages
- 640
- Reading time
- ≈ 11 h 40 min
- Checkpoints
- 22
- Genre
- Romance
Free on iPhone and Android.
How long does it take to read Onyx Storm?
At 640 pages, Onyx Storm is a long book. Expect about 11 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 24 days of reading. At the median pace of Vread readers, 72 pages per reading day, it takes 9 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 day24 days
- Vread median pace (72 pp./day)9 days
Estimates; see the method at the bottom of the page.
Prove you read it
The Vread challenge: 22 checkpoints
- Checkpoint 1, page 29
- Checkpoint 2, page 58
- Checkpoint 3, page 87
- Checkpoint 4, page 116
- Checkpoint 5, page 145
- Checkpoint 6, page 175
- Checkpoint 7, page 204
- Checkpoint 8, page 233
- Checkpoint 9, page 262
- Checkpoint 10, page 291
- Checkpoint 11, page 320
- Checkpoint 12, page 349
- Checkpoint 13, page 378
- Checkpoint 14, page 407
- Checkpoint 15, page 436
- Checkpoint 16, page 465
- Checkpoint 17, page 495
- Checkpoint 18, page 524
- Checkpoint 19, page 553
- Checkpoint 20, page 582
- Checkpoint 21, page 611
- Checkpoint 22, page 640
In Vread, Onyx Storm is split into 22 checkpoints, one every 29 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 22 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 Onyx Storm: 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 Onyx Storm?
How long does it take to read Onyx Storm?
Is there a quiz on Onyx Storm?
Where can I find a summary of Onyx Storm?
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Read Onyx Storm 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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