Heroes of Olympus Books in Order
Heroes of Olympus is a 5-book series by Rick Riordan for ages 9–12, at a grades 4–5 reading level, with moderate to intense content (HootRated intensity 3–4 out of 5).
- Books
- 5
- In series order
- Content intensity
- Moderate to intense
- HootRated 3–4 out of 5 · avg 3.2
Heroes of Olympus Reading Order
All 5 Heroes of Olympus books, numbered in series order.
| # | Title | Reading Level | Ages | Content |
|---|---|---|---|---|
| 1 | The Lost Hero | Level 4-5 | 9-12 | Moderate |
| 2 | The Son of Neptune | Level 4-5 | 9-12 | Intense |
| 3 | The Mark of Athena | Level 4-5 | 9-12 | Moderate |
| 4 | The House of Hades | Level 4-5 | 9-12 | Moderate |
| 5 | The Blood of Olympus | Level 4-5 | 9-12 | Moderate |
Content Intensity Across the Series
ConsistentContent stays at a steady intensity level throughout the series.
Series books grow with readers — but that's also the trap. Most series start at one reading level and one content intensity and drift upward over the course of the run. Heroes of Olympus (5 books by Rick Riordan) lands at a grades 4–5 reading level, with average content intensity 3.2/5. Intensity stays consistent across the series, so a reader who can handle the first book can generally handle the rest.
The reading-order table above lists every book with per-volume reading level, age and intensity ratings so you can spot any escalation before it catches your reader off guard. For a deeper dive into how we score text difficulty vs. emotional weight separately — and why series readers especially benefit from that split — see our methodology page.
All Heroes of Olympus Books
The Lost Hero
Rick Riordan
The Lost Hero
Rick Riordan
The Son of Neptune
Rick Riordan
The Son of Neptune
Rick Riordan
The Mark of Athena
Rick Riordan
The Mark of Athena
Rick Riordan
The House of Hades
Rick Riordan
The House of Hades
Rick Riordan
The Blood of Olympus
Rick Riordan
The Blood of Olympus
Rick Riordan
Series Like Heroes of Olympus: What to Read Next
Similar reading level, content intensity and themes.
- Percy Jackson & the Olympians by Rick Riordan 5 books · Grades 4–5 · moderate to very intense content
- Trials of Apollo by Rick Riordan 5 books · Grades 4–5 · moderate to intense content
- Warriors: The Power of Three by Erin Hunter 6 books · Grades 4–5 · mild to intense content
- Warriors: Super Edition by Erin Hunter 14 books · Grades 4–6 · mild to moderate content
- Fablehaven by Brandon Mull 5 books · Grades 4–5 · mild to moderate content
- The Underland Chronicles by Suzanne Collins 5 books · Grades 4–8 · moderate to intense content
Questions about the Heroes of Olympus series
- What reading level is the Heroes of Olympus series?
- Heroes of Olympus books are at a grades 4–5 reading level (average grade level 4.7), and HootRated recommends the series for ages 9–12. There are 5 books in the series.
- What order should I read the Heroes of Olympus books?
- Read the Heroes of Olympus books in series order: Book 1: The Lost Hero; Book 2: The Son of Neptune; Book 3: The Mark of Athena; Book 4: The House of Hades; Book 5: The Blood of Olympus.
- What age is the Heroes of Olympus series appropriate for?
- HootRated recommends Heroes of Olympus for ages 9–12. Content is moderate to intense (HootRated intensity 3–4 out of 5). Intensity stays consistent across the series, so a reader who can handle the first book can generally handle the rest.