: A Run for the Dream, BigBang's 13,140 Days Challenge is a book released by South Korean group Big Bang on January 28, 2009.

It has been a topic of discussion since the recommendation of various names such as businessmen, literary circles, and religious groups.

[3] [4] It became no.1 on best seller list for 6 straight weeks[5] and after 5 months the book already sold over 400,000 copies resulting in around KRW 4.5 billion revenues.

Their passion and sincerity touched the lives of a lot of people and removed the preconception about them as being mere entertainers.

"[5] Kim Nan-do, a consumer science professor at Seoul National University, said "Since their birth, they have participated and shared with the community.