Books like The Hunt for the Colosseum Ghost
Gerónimo Stilton
The Hunt for the Colosseum Ghost is 161 pages, about 2 hours 57 minutes at 250 words a minute.
11 books to read next
How long each takes
City of Ghosts 5.6 h 
Can You See What I See? 39 min 
R. L. Stine's Haunted Lighthouse 1.6 h 
Ruined 5.7 h 
The Dead End 3.2 h 
Georgie 46 min 
Ghost Class 1.6 h 
The Ghost in the First Row 2.0 h 
Seven Strange and Ghostly Tales 2.6 h 
Goth Girl and the Ghost Mouse 4.1 h 
Gus Was a Friendly Ghost 35 min Bar height shows length. Estimated at 250 words a minute.