Longest Films Ever Made

Title	Running time	Year released
Modern Times Forever (Stora Enso Building, Helsinki)	14400 min (240 hr / 10 days)	2011
Cinématon	11160 min (186 hr / 7 days, 18 hours).	1978–2013
Beijing 2003	9000 min (150 hr / 6 days, 6 hours).	2004
Untitled #125 (Hickory)	7200 min (120 hr / 5 days).	2011
Matrjoschka	5700 min (95 hr / 3 days, 23 hours).	2006
The Cure for Insomnia	5220 min (87 hr / 3 days, 15 hours).	1987
The Longest Most Meaningless Movie in the World	2880 min (48 hr)	1968
**** (Four Stars)	1500 min (25 hr / 1 day, 1 hour).	1967
24 Hour Psycho	1440 min (24 hr / 1 day).	1993
The Clock	1440 min (24 hr / 1 day).	2010

Sources: wikipedia.org