Marathon is a studio album by Saga, their fifteenth album of new material.

It is the final album to feature original drummer Steve Negus.

All music is composed by SagaThree of the songs, "Streets of Gold (Chapter 14)", "You Know I Know (Chapter 12)" and "Worlds Apart (Chapter 16)," were the last part of a second series of eight songs that Saga included within some of their albums called "The Chapters," which told the story of a young Albert Einstein.

These songs were included on The Chapters Live, an album that the band released in 2005.