He graduated from University of Texas at Austin where he double-majored in English and history. For fifteen years he taught in public and private schools in California and in San Antonio, Texas.
Riordan is the multi-award-winning author of the Tres Navarre mystery series for adults and the #1 New York Times best-selling Percy Jackson and the Olympians series for children. The novels draw on Riordan's experience teaching Greek mythology and his interaction with students who have learning differences. Riordan lives in San Antonio with his wife and their two sons.
A new series,The Kane Chronicles was released in May 2010, involving the Egyptian gods, but he hints that it relates to the Camp Half-Blood series (it is hinted in the book as well). He is also writing a second Camp Half-Blood series, The Heroes of Olympus. The first book, The Lost Hero, was released in October 2010. The second book, The Son of Neptune, will be released in October 2011.