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Longest individual escalators
[edit]Asia and Europe
Several "metro" or "subway" systems in Central and Eastern Europe feature very long escalators.
In the Park Pobedy station of the Moscow Metro, opened in 2003, the escalators are 126.8 m (416 ft) (63.4 m/208 ft high), or 740 steps, long, and take nearly three minutes to transit. Deep underground stations in St. Petersburg have escalators up to approximately 142 m (466 ft) long (71 m/233 ft high).
The Kiev Metro Kreschatik station's lower-level second exit escalator (a type ЛТ-2, circa 1965), lifts riders 216 feet (66 m), or 743 steps, up a 432-foot (132 m)-long incline.[citation needed]
The longest escalator in Prague is at the Nám?stí Míru station at 290 feet (88 m).
The longest escalator of a European shopping mall is at MyZeil, Frankfurt, Germany, with a length of 150 feet (46 m).
The tallest escalator on the London Underground system is at Angel station with a length of 197 feet (60 m), and a vertical rise of 90 feet (27 m).
The longest wooden escalators in the United Kingdom are at the Tyne Tunnel, with a length of 200 feet (61 m). (See above.)
The longest escalator on the Stockholm Metro, and in Western Europe, is at Västra skogen with a length of 220 feet (67 m) and in Helsinki Metro at Kamppi station with a length of 210 feet (64 m).
The largest "single truss escalator" is in the Bentall Centre in Kingston upon Thames in Greater London, UK. It connects the ground floor with the second floor with only top and bottom supports.[citation needed]
The longest escalator in Bangkok, Thailand and Southeast Asia is in Bangkok Metro's Si Lom Station. It connect concourse level with platform 1 which heading to Hua Lam Phong. It is 43 m (141 ft) in length and about 20 m (66 ft) in depth.
[edit]North and South America

View from bottom of Porter Square escalator, 2010
The longest set of single-span uninterrupted escalators in the Western Hemisphere is at the Wheaton station of the Washington Metro system. They are 230 feet (70 m)[53][54] long with a vertical rise of 115 feet (35 m),[citation needed] and take what is variously described as 2 minutes and 45 seconds[citation needed] or nearly three-and-a-half minutes,[55] to ascend or descend without walking.
The longest freestanding (supported only at the ends) escalator in the world is inside CNN Center’s atrium in Atlanta, Georgia. It rises 8 stories and is 205 feet (62 m) long. Originally built as the entrance to the amusement park The World of Sid and Marty Krofft, the escalator is now used for CNN studio tours.[56]
In December 2011, a network of six escalators totalling 1,260 feet (384 m), equivalent to 28 stories high, was opened in Medellin, Colombia, offering the 12,000 residents of Comuna 13 a six-minute ride to the city center compared to their previous 35-minute climb on foot.[57]

I don't know about that but I know that the longest accident  recorded in history is a guy in new york that fell down an up escalator for 47 minutes.  Poor chap, he was a mess.