science fiction audiobook
Project Hail Mary by Andy Weir narrated by Ray Porter is about 16 hours and 10 minutes long at normal speed. At 1.5× that drops to about 10 hr 47 min, and at 2× to about 8 hr 5 min.
Runtimes are approximate and vary slightly by edition and retailer. Check the length shown in Audible, Libby, Spotify or Apple Books for your copy.
| Playback speed | Total time |
|---|---|
| 0.8× | 20 hr 13 min |
| 1× | 16 hr 10 min |
| 1.25× | 12 hr 56 min |
| 1.5× | 10 hr 47 min |
| 1.75× | 9 hr 14 min |
| 2× | 8 hr 5 min |
| 2.5× | 6 hr 28 min |
| 3× | 5 hr 23 min |
Plan your listen
At one hour a day and normal speed, you'll finish in about 17 days. Speed it up to 1.5× and the same hour a day finishes it in about 11 days. At 45 minutes a day and 1.5×, plan on about 15 days.
The table below shows whole days needed for every combination of speed and daily listening time.
| Speed | 15 min | 30 min | 45 min | 1 hr | 1.5 hr | 2 hr |
|---|---|---|---|---|---|---|
| 1× | 65 | 33 | 22 | 17 | 11 | 9 |
| 1.25× | 52 | 26 | 18 | 13 | 9 | 7 |
| 1.5× | 44 | 22 | 15 | 11 | 8 | 6 |
| 2× | 33 | 17 | 11 | 9 | 6 | 5 |
How long, really
At 16 hr 10 min, Project Hail Mary is about the length of a drive from Chicago to Washington, D.C. and back. That's longer than about 75% of the 169 popular audiobooks we list.
Spoken at an average narration pace, Project Hail Mary comes to roughly 150,000 words. Narrators vary, so a faster or slower reader will shift that number and the total runtime.
Want to try other speeds or your own schedule? Use the audiobook speed calculator or the listening goal calculator to find the daily minutes you need.
Track it as you listen
Booktrace is an iPhone audiobook tracker that logs your sessions, chapters, narrator and playback speed in one place, so you can see real progress through Project Hail Mary and how many hours remain, whichever app you listen in.
Common questions
The Project Hail Mary audiobook by Andy Weir runs about 16 hours and 10 minutes at normal (1x) speed, in the edition narrated by Ray Porter. Exact runtime can differ by a few minutes between editions and stores.
At 1.5x speed, Project Hail Mary takes about 10 hours and 47 minutes. At 2x it takes about 8 hours and 5 minutes.
At one hour a day and normal speed, Project Hail Mary takes about 17 days. At 1.5x speed and an hour a day it takes about 11 days. At 30 minutes a day and normal speed it takes about 33 days.
Compared with the 169 popular audiobooks on this site, Project Hail Mary is longer than about 75% of them. At 16 hr 10 min it is about the length of a drive from Chicago to Washington, D.C. and back.
