Book · Fantasy and science fiction
Green Mars
by Kim Stanley Robinson, Ana Quijada
Page count, estimated reading time and reading quiz: everything to know before you start Green Mars, and the Vread challenge to get to the end.
- Pages
- 859
- Reading time
- ≈ 15 h 30 min
- Checkpoints
- 24
- Genre
- Fantasy, SF
Free on iPhone and Android.
How long does it take to read Green Mars?
At 859 pages, Green Mars is a doorstopper. Expect about 15 hours 30 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 32 days of reading. At the median pace of Vread readers, 72 pages per reading day, it takes 12 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 day32 days
- Vread median pace (72 pp./day)12 days
Estimates; see the method at the bottom of the page.
Prove you read it
The Vread challenge: 24 checkpoints
- Checkpoint 1, page 36
- Checkpoint 2, page 72
- Checkpoint 3, page 107
- Checkpoint 4, page 143
- Checkpoint 5, page 179
- Checkpoint 6, page 215
- Checkpoint 7, page 251
- Checkpoint 8, page 286
- Checkpoint 9, page 322
- Checkpoint 10, page 358
- Checkpoint 11, page 394
- Checkpoint 12, page 430
- Checkpoint 13, page 465
- Checkpoint 14, page 501
- Checkpoint 15, page 537
- Checkpoint 16, page 573
- Checkpoint 17, page 608
- Checkpoint 18, page 644
- Checkpoint 19, page 680
- Checkpoint 20, page 716
- Checkpoint 21, page 752
- Checkpoint 22, page 787
- Checkpoint 23, page 823
- Checkpoint 24, page 859
In Vread, Green Mars is split into 24 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 24 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 Green Mars: 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 Green Mars?
How long does it take to read Green Mars?
Is there a quiz on Green Mars?
Where can I find a summary of Green Mars?
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Read Green Mars 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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