Books like Celtic Heritage
Alwyn D. Rees
Celtic Heritage is 427 pages, about 7 hours 50 minutes at 250 words a minute.
10 books to read next
How long each takes
At Swim-Two-Birds 5.8 h 
The Mabinogion 5.7 h 
The Celtic Twilight 3.9 h 
Irish Myths and Legends 5.9 h 
The Tain 5.3 h 
The Mabinogion 5.8 h 
Tree and Leaf 2.1 h 
The Mabinogion 5.2 h 
Myths & Legends of the Celtic Race 8.4 h 
Breaking the Magic Spell 3.7 h Bar height shows length. Estimated at 250 words a minute.