Books like Black Trillium
Marion Zimmer Bradley, Julian May, Andre Norton
Black Trillium is 430 pages, about 7 hours 53 minutes at 250 words a minute.
12 books to read next
How long each takes
Winter's Heart 12.3 h 
Warbreaker 11.6 h 
When Darkness Falls 9.1 h 
Touch of Power 7.2 h 
The Elvenbane 7.6 h 
Third Watch 5.3 h 
The Cruel Prince 6.8 h 
The Last Man 7.8 h 
The Eye of the World 14.4 h 
Blue Moon Rising 8.7 h 
Elantris 11.9 h 
The Chronicles of Narnia 14.1 h Bar height shows length. Estimated at 250 words a minute.