A non-exhaustive list of "notable" films running three hours (180 minutes) or longer, sorted by runtime. This is by no means complete, and the line between film and television, and singular films and series, is as hazy as ever.
Not included below but valid: Heimat, The Human Condition trilogy, Kill Bill, Nymphomaniac.
The Clock (2010, Christian Marclay)
Twin Peaks: The Return (2017, David Lynch)
Berlin Alexanderplatz (1980, Rainer Werner Fassbinder)
Resan (1987, Peter Watkins)
La Flor (2018, Mariano Llinás)
Crude Oil (2008, Wang Bing)
How Yukong Moved the Mountains (1976, Joris Ivens)
Out 1: Noli me tangere (1971, Jacques Rivette)
Evolution of a Filipino Family (2004, Lav Diaz)
Six fois deux/Sur et sous la communication (1976, Jean-Luc Godard & Anne-Marie Miéville)
Dekalog (1989, Krzystof Kieslowski)
Shoah (1985, Claude Lanzmann)
Tie Xi Qu: West of the Tracks (2002, Wang Bing)
Heremias (2006, Lav Diaz)
Eight Hours Don't Make a Day (1972, Rainer Werner Fassbinder)
Dead Souls (2018, Wang Bing)
Barrabas (1919, Louis Feuillade)
A Lullaby to the Sorrowful Mystery (2016, Lav Diaz)
Empire (1964, Andy Warhol)
Park Lanes (2015, Kevin Jerome Everson)
8903 Empire (2015, Kevin Jerome Everson)
O.J.: Made in America (2016, Ezra Edelman)
Melancholia (2008, Lav Diaz)
Hitler: A Film from Germany (1977, Hans-Jürgen Syberberg)
Sátántangó (1994, Béla Tarr)
War and Peace (1966, Sergei Bondarchuk)
Tih Minh (1918, Louis Feuillade)
Les Vampires (1915, Louis Feuillade)
The Satin Slipper (1985, Manoel de Oliveira)
Star Spangled to Death (2004, Ken Jacobs)
Arabian Nights (2015, Miguel Gomes)
Florentina Hubaldo, CTE (2012, Lav Diaz)
Phantom India (1969, Louis Malle)
Century of Birthing (2011, Lav Diaz)
Near Death (1989, Frederick Wiseman)
Little Dorrit (1987, Christine Edzard)
Tanner '88 (1988, Robert Altman)
Angels in America (2003, Mike Nichols)
Top of the Lake (2013, Jane Campion)
Top of the Lake: China Girl (2017, Jane Campion)
La Commune (Paris, 1871) (2000, Peter Watkins)
The Owl's Legacy (1989, Chris Marker)
From What Is Before (2014, Lav Diaz)
Spiritual Voices (1995, Alexander Sokurov)
Carlos (2010, Olivier Assayas)
Fantômas (1913, Louis Feuillade)
Mildred Pierce (2011, Todd Haynes)
Joan the Maid (1994, Jacques Rivette)
Homeland: Iraq Year Zero (2015, Abbas Fahdel)
Napoléon (1927, Abel Gance)
Sleep (1963, Andy Warhol)
1900 (1976, Bernardo Bertolucci)
Happy Hour (2015, Ryusuke Hamaguchi)
Tsahal (1994, Claude Lanzmann)
Batang West Side (2001, Lav Diaz)
Fanny and Alexander (1983, Ingmar Bergman)
France/Tour/Detour/Deux/Enfants (1977, Jean-Luc Godard & Anne-Marie Miéville)
Penance (2012, Kiyoshi Kurosawa)
Judex (1916, Louis Feuillade)
Smoking/No Smoking (1993, Alain Resnais)
As I Was Moving Ahead Occasionally I Saw Brief Glimpses of Beauty (2000, Jonas Mekas)
Die Nibelungen (1924, Fritz Lang)
The Kingdom II (1997, Lars von Trier)
Scenes from a Marriage (1973, Ingmar Bergman)
Until the End of the World (1991, Wim Wenders)
The Memory of Justice (1976, Marcel Ophuls)
The Art of Vision (1965, Stan Brakhage)
The Halt (2019, Lav Diaz)
The Kingdom (1994, Lars von Trier)
La Roue (1923, Abel Gance)
Shoah: Four Sisters (2017, Claude Lanzmann)
Mysteries of Lisbon (2010, Raúl Ruiz)
Dr. Mabuse, the Gambler (1922, Fritz Lang)
"Rameau's Nephew" by Diderot (Thanx to Dennis Young) by Wilma Schoen (1974, Michael Snow)
Hotel Terminus: The Life and Times of Klaus Barbie (1988, Marcel Ophuls)
Histoire(s) du cinéma (1989, Jean-Luc Godard)
Out 1: Spectre (1972, Jacques Rivette)
The Hour of the Furnaces (1968, Octavio Getino & Fernando Solanas)
Doomed Love (1978, Manoel de Oliveira)
Che (2008, Steven Soderbergh)
Wormwood (2017, Errol Morris)
When the Levees Broke: A Requiem in Four Acts (2006, Spike Lee)
The Age of the Medici (1972, Roberto Rossellini)
Parsifal (1982, Hans-Jürgen Syberberg)
Route One/USA (1989, Robert Kramer)
Intimacies (2013, Ryusuke Hamaguchi)
L'amour fou (1969, Jacques Rivette)
The Sorrow and the Pity (1969, Marcel Ophuls)
Norte, the End of History (2013, Lav Diaz)
Belfast, Maine (1999, Frederick Wiseman)
My Voyage to Italy (1999, Martin Scorsese)
Historias extraordinarias (2008, Mariano Llinás)
At Berkeley (2013, Frederick Wiseman)
Hamlet (1996, Kenneth Branagh)
La Belle noiseuse (1991, Jacques Rivette)
Sangam (1964, Raj Kapoor)
A Brighter Summer Day (1991, Edward Yang)
Love Exposure (2008, Sion Sono)
Ludwig (1973, Luchino Visconti)
Season of the Devil (2018, Lav Diaz)
Gone With the Wind (1939, Victor Fleming)
An Elephant Sitting Still (2018, Hu Bo)
Burning Bush (2013, Agnieszka Holland)
Once Upon a Time in America (1984, Sergio Leone)
The Woman Who Left (2016, Lav Diaz)
'Til Madness Do Us Part (2013, Wang Bing)
Woodstock (1970, Michael Wadleigh)
A Personal Journey With Martin Scorsese Through American Movies (1995, Martin Scorsese)
Anna (1975, Alberto Grifi & Massimo Sarchielli)
Mera Naam Joker (1970, Raj Kapoor)
Lagaan: Once Upon a Time in India (2001, Ashutosh Gowariker)
The Troubles We've Seen (1994, Marcel Ophuls)
The Travelling Players (1975, Theo Angelopoulos)
The 47 Ronin (1941, Kenji Mizoguchi)
La Comédie-Française ou L'amour joué (1996, Frederick Wiseman)
Edvard Munch (1974, Peter Watkins)
High School II (1994, Frederick Wiseman)
Heaven's Gate (1980, Michael Cimino)
Eureka (2000, Shinji Aoyama)
Heimat Is a Space in Time (2019, Thomas Heise)
Lawrence of Arabia (1962, David Lean)
State Legislature (2007, Frederick Wiseman)
Eros + Massacre (1969, Yoshishige Yoshida)
The Republic (2017, James N. Kienitz Wilkins)
The Lincoln Cycle (1917, Benjamin Chapin and John M. Stahl)
World on a Wire (1973, Rainer Werner Fassbinder)
Ben-Hur (1959, William Wyler)
Mektoub, My Love: Intermezzo (2019, Abdellatif Kechiche)
Alexander the Great (1980, Theo Angelopoulos)
Chelsea Girls (1966, Andy Warhol)
The Last of the Unjust (2013, Claude Lanzmann)
The Irishman (2019, Martin Scorsese)
George Harrison: Living in the Material World (2011, Martin Scorsese)
No Direction Home: Bob Dylan (2005, Martin Scorsese)
Exodus (1960, Otto Preminger)
War and Peace (1956, King Vidor)
Boccaccio '70 (1962, Mario Monicelli and Federico Fellini and Luchino Visconti and Vittorio De Sica)
Seven Samurai (1954, Akira Kurosawa)
The Mother and the Whore (1973, Jean Eustache)
Chung Kuo – Cina (1972, Michelangelo Antonioni)
Andrei Rublev (1966, Andrei Tarkovsky)
Ryan's Daughter (1970, David Lean)
Coincoin and the Extra-Humans (2018, Bruno Dumont)
Sholay (1975, Ramesh Sippy)
Abraham's Valley (1973, Manoel de Oliveira)
The Godfather Part II (1974, Francis Ford Coppola)
Malcolm X (1992, Spike Lee)
The Lord of the Rings: Return of the King (2003, Peter Jackson)
Jeanne Dielman, 23 Quai du Commerce, 1080 Bruxelles (1975, Chantal Akerman)
Giant (1956, George Stevens)
Doctor Zhivago (1965, David Lean)
P'tit Quinquin (2014, Bruno Dumont)
Public Housing (1997, Frederick Wiseman)
0.5mm (2014, Momoko Ando)
Marcello Mastroianni: I Remember (1997, Anna Maria Tatò)
Spartacus (1960, Stanley Kubrick)
Intolerance (1916, D.W. Griffith)
Ex Libris: The New York Public Library (2017, Frederick Wiseman)
Café Noir (2009, Jung Sung-il)
Winter Sleep (2014, Nuri Bilge Ceylan)
Reds (1981, Warren Beatty)
Domestic Violence (2001, Frederick Wiseman)
Domestic Violence II (2002, Frederick Wiseman)
Schindler's List (1993, Steven Spielberg)
The Falls (1980, Peter Greenaway)
Milestones (1975, Robert Kramer & John Douglas)
Titanic (1997, James Cameron)
The Birth of a Nation (1915, D.W. Griffith)
The Right Stuff (1983, Philip Kaufman)
Céline and Julie Go Boating (1974, Jacques Rivette)
Awaara (1951, Raj Kapoor)
BNSF (2013, James Benning)
Nixon (1995, Oliver Stone)
Anjathe (2008, Mysskin)
Gandhi (1982, Richard Attenborough)
Grindhouse (2007, Quentin Tarantino and Robert Rodriguez)
Children of Paradise (1945, Marcel Carné)
The Emigrants (1971, Jan Troell)
Legend of the Mountain (1979, King Hu)
Dilwale Dulhania Le Jayenge (1995, Aditya Chopra)
In Jackson Heights (2015, Frederick Wiseman)
My Journey Through French Cinema (2016, Bertrand Tavernier)
Magnolia (1999, Paul Thomas Anderson)
The Green Mile (1999, Frank Darabont)
JFK (1991, Oliver Stone)
Muqaddar Ka Sikandar (1978, Prakash Mehra)
The Hateful Eight (2015, Quentin Tarantino)
The Wild Pear Tree (2018, Nuri Bilge Ceylan)
Kaos (1984, Paolo & Vittorio Taviani)
Over the Years (2015, Nikolaus Geyrhalter)
Memories of Prison (1984, Nelson Pereira dos Santos)
King Kong (2005, Peter Jackson)
Short Cuts (1993, Robert Altman)
The Fall of the Roman Empire (1964, Anthony Mann)
Lamhe (1991, Yash Chopra)
Trimurti (1995, Mukul Anand)
The Leopard (1963, Luchino Visconti)
Judgment at Nuremberg (1961, Stanley Kramer)
The Tree of Wooden Clogs (1978, Ermanno Olmi)
Fengming: A Chinese Memoir (2007, Wang Bing)
Saagar (1985, Ramesh Sippy)
Barry Lyndon (1975, Stanley Kubrick)
Red Beard (1964, Akira Kurosawa)
Betty Blue (1986, Jean-Jacques Beineix)
Israel Why (1973, Claud Lanzmann)
La Région Centrale (1971, Michael Snow)
Amar Akbar Anthony (1977, Manmohan Desai)
Haqeeqat (1964, Chetan Anand)
The Deer Hunter (1978, Michael Cimino)
Kwaidan (1965, Masaki Kobayashi)
O Lucky Man! (1973, Lindsay Anderson)
Regular Lovers (2005, Philippe Garrel)
Comrades (1986, Bill Douglas)
A Fugitive from the Past (1965, Tomu Uchida)
Guide (1965, Vijay Anand)
Prem Rog (1982, Raj Kapoor)
The Saragossa Manuscript (1965, Wojciech Has)
El Cid (1961, Anthony Mann)
Aurora (2010, Cristi Puiu)
Anniyan (2005, S. Shankar)
Another Year (2016, Shengze Zhu)
The Wolf of Wall Street (2013, Martin Scorsese)
Blue Is the Warmest Color (2013, Abdellatif Kechiche)
Inland Empire (2006, David Lynch)
A Touch of Zen (1971, King Hu)
National Gallery (2014, Frederick Wiseman
A Grin Without a Cat (1977, Chris Marker)
Mektoub My Love: Canto Uno (2017, Abdellatif Kechiche)
Beloved Sisters (2014, Dominik Graf)
Sentimental Destinies (2000, Olivier Assayas)