Season
- Season 0 2010-04-01
- Season 1 1998-04-20
- Season 2 1998-11-09
- Season 3 2000-01-17
- Season 4 2001-01-09
- Season 5 2002-02-04
- Season 6 2003-01-06
- Season 7 2003-09-29
- Season 8 2004-02-02
- Season 9 2004-10-04
- Season 10 2005-03-07
- Season 11 2005-12-05
- Season 12 2006-05-29
- Season 13 2006-10-12
- Season 14 2007-04-10
- Season 15 2008-01-23
- Season 16 2008-09-16
- Season 17 2009-04-08
- Season 18 2009-09-30
- Season 19 2010-04-07
- Season 20 2010-10-06
- Season 21 2011-06-22
- Season 22 2012-01-25
- Season 23 2012-09-19
- Season 24 2013-07-10
- Season 25 2014-04-10
- Season 26 2015-01-06
- Season 27 2015-12-02
- Season 28 2016-05-04
- Season 29 2017-02-07
- Season 30 2017-07-18
- Season 31 2018-01-02
- Season 32 2018-07-10
- Season 33 2019-02-06
- Season 34 2019-08-28
- Season 35 2020-04-01
- Season 36 2020-12-09
- Season 37 2021-08-11
- Season 38 2022-10-12
- Season 39 2023-10-25
- Season 40 2024-08-14
Season 40 Episode
- Season 40 The Era Invitational (1)
- Season 40 The Era Invitational (2)
- Season 40 A Fatal Era
- Season 40 My Trivia Era
- Season 40 An Era Tradition
- Season 40 My Real Friends Era
- Season 40 Trust in Your Era
- Season 40 The Era of the Gladiator
- Season 40 An Era of One
- Season 40 A New Era
- Season 40 Payback Era
- Season 40 The Era of the Purge
- Season 40 Best Friends 4Era
- Season 40 Swinging Era
- Season 40 Thinking Thin Era
- Season 40 Must Win Era
- Season 40 Location Change Era
- Season 40 The End of An Era (1)
- Season 40 The End of An Era (2)
- Season 40 Reunion (1)
- Season 40 Reunion (2)
The Challenge - Season 40 Episode 13 Best Friends 4Era
7.30 42 minutes A rivalry heats up and no one is safe from the chaos that ensues; one Challenger tries to reignite their competitive flame to avoid elimination; best friends avoid facing off with one another.
