The Books Insiderindependent audiobook data
Firmament: Radialloy by J. Grace Pennington

Firmament: Radialloy: Audiobook

Book 1 of the Firmament series

According to The Books Insider's catalog data, the Firmament: Radialloy audiobook runs 5.3 hours unabridged, narrated by J. Grace Pennington (about 3.6 hours at 1.5× playback speed).

5.3listening hrs
Science Fictionstore shelf
2025released
Free for new listeners

The instrument When will you finish it?

Based on 5.3 hours of listening.

Days to finish Firmament: Radialloy at common listening paces
Your paceYou'll finish in
30 min / day11 days
1 hour / day6 days
2 hours / day3 days
1 hour / day at 1.5×4 days

Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.

What our data says

  • At 5.3 hours, it is shorter than 75% of the 13,269 Science Fiction audiobooks in our catalog.

Catching up on Firmament

This is book 1. Books 1 to 2 run 10.5 hours in all.

BookTitleLength
1Firmament: Radialloy5.3 hrs
2Firmament: In His Image5.2 hrs

Computed from 409,794 English-language unabridged audiobooks in The Books Insider catalog (store data read November 3, 2026). Lengths are the store's own running times. Methodology.

About this listen

Firmament: Radialloy is book 1 of J. Grace Pennington's Firmament series: a 5.3-hour unabridged recording, read by J. Grace Pennington, released January 20, 2025, on the Science Fiction and Religious Fiction shelves.

The listen at a glance

Length
5.3 hrs
Narrated by
J. Grace Pennington
Released
January 20, 2025
Format
Unabridged audiobook
Language
English
Store shelves
Science Fiction, Religious Fiction
Series
Firmament #1
ISBN
9798822625792

How to listen to Firmament: Radialloy free

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Questions listeners ask

How long is the Firmament: Radialloy audiobook?

Firmament: Radialloy runs 5.3 hours unabridged. At 1.5× speed that drops to roughly 3.6 hours.

Is the Firmament: Radialloy audiobook free?

Yes, for new listeners: the trial starts you with three free audiobooks.

Who narrates Firmament: Radialloy?

Firmament: Radialloy is narrated by J. Grace Pennington.