I reluctantly started this book so I could conference with a student. I did not expect to like it as I am not an enthusiast of marathon running. I was wrong! The story is told in two ways; partly as an interview and partly as a flashback narrative of Quinn's (the main character) experience. The story includes all of the physical and emotional challenges of running an ultra marathon from this teenager's point of view. I learned a great deal about the motivations behind running such a race. I really enjoyed the way the author introduces the various types of athletes who participate in these non-traditional events as Quinn participates in the 24 hour race. I think middle grade readers would really enjoy this story and it's a great addition to my library as it depicts the participation in an individual sport.