Before
2 Days & 1 Night was first aired, it was preceded by
Are You Ready which featured four of the six
2 Days & 1 Night Season 1 members (
Kang Ho-dong,
Lee Soo-geun,
Kim Jong-min, and
Eun Jiwon).
Are You Ready was canceled due to low viewership ratings and was replaced by
2 Days & 1 Night after 12 episodes. Singer and actor
Lee Ji-hoon was offered to join the cast of
1 Night 2 Days but rejected the role to take a role on
MBC drama
New Heart instead. ;Season 1 Season 1 premiered on August 5, 2007 with cast members Kang Ho-dong, Lee Soo-geun, Kim Jong-min, Eun Jiwon,
Lee Seung-gi,
Noh Hong-chul,
Ji Sang-ryul, and
Sanggeun the dog mascot. The show later experienced a number of cast member changes. Season 1 broadcast its final episode on February 26, 2012. ;Season 2 Season 2 premiered on March 4, 2012 with returning members Lee Soo-geun, Kim Jong-min, and
Uhm Tae-woong, who were joined by new members
Kim Seung-woo,
Cha Tae-hyun,
Sung Si-kyung, and
Joo Won. Kim Seung-woo left the show in March 2013 to focus on his acting career. He was replaced by fellow actor
Yoo Hae-jin. Season 2 officially wrapped up on November 24, 2013. ;Season 3 Season 3 premiered on December 1, 2013, with returning members Cha Tae-hyun and Kim Jong-min, and new members
Kim Jun-ho,
Kim Joo-hyuk,
Jung Joon-young, and
Defconn. On November 22, 2015, Kim Joo-hyuk left the cast of season 3 on their second anniversary. He filmed his last episodes on November 20 and 21.
Yoon Shi-yoon was then rumored to be in talks to join the show and officially became the new member in April 2016.
Lee Yong-jin joined the cast as ''2 Days & 1 Night's'' first ever intern in December 2018 after appearing as a guest. Jung Joon-young left the show on September 29, 2016 due to his scandal regarding a "sexual offence" charged by his former girlfriend, of which he was later cleared. On January 7, 2017, a production member confirmed that Joon-young will return to the show, already having recorded an episode the previous day. Jung Joon-young was permanently removed on March 12, 2019 by the production team due to his involvement in the
Burning Sun scandal concerning non-consensual filming during sex and covert distribution of said illegal videos. As a result, KBS announced on March 15 that they are halting the production and broadcast of
2 Days & 1 Night until further announcement is made. The chatroom exposé also affected members
Cha Tae-hyun and
Kim Jun-ho with allegations of golf gambling in large amounts, resulting in both of them quitting all their television programs, including
2 Days & 1 Night, with immediate effect. This marked the abrupt end of Season 3, unlike the two previous seasons having traditional farewell episodes. This also marked the end of Defconn, Yoon Shi-yoon and Lee Yong-jin's run with the show. It was revealed in April 2021 that Lee Yong-jin was set to be a permanent cast member of Season 3. An episode welcoming him as a permanent member was filmed but not aired. ;Season 4 Season 4 was confirmed in November 2019 with Kim Jong-min returning with new members
Yeon Jung-hoon,
Moon Se-yoon,
Kim Seon-ho,
DinDin and
Ravi. The new cast filmed the first episode on November 12, 2019 which had its first broadcast on December 8, 2019. On October 20, 2021, both KBS and the production team confirmed that
Kim Seon-ho has been removed as a permanent cast member following controversies regarding his personal life. He was edited out of the remaining episodes that were shot prior to his removal in order to "minimize the inconvenience to viewers". On April 21, 2022,
Ravi announced his departure from the show, with his last episode broadcast on May 1. On November 28, 2022,
Yoo Seon-ho was confirmed to be the newest cast member, with his first episode airing on December 11, 2022. On June 9, 2024,
Yeon Jung-hoon and
Na In-woo announced their departure from the show, with their last episode broadcast on July 21. The show took a 3-week break for live coverage of the
2024 Summer Olympics and underwent a re-organization. On August 2,
Jo Se-ho and
Lee Joon were confirmed to join the show as new members, with their first episode to air on August 18. On December 9, 2025,
Jo Se-ho announced he was leaving the show voluntarily following allegations of him being connected to a criminal organization. His last episode aired on December 28. ==Broadcast==