Was this the longest US passenger train?
6 E units and 27 cars?
"By September 7, 1969, UP had retreated so much that the City of Los Angeles, City of San Francisco, City of Portland, City of Denver, and City of Kansas City (ex-City of St. Louis but N&W cut service to St. Louis after the Wabash merger) were all combined into one glorious train, the City of Everywhere! (UP never called it this, it’s a railfan moniker) From Cheyenne to Green River, where the City of Everywhere was fully combined, the train reached 27 cars in length and six E-units in an A-B-B-B-B-A lashup unmatched by any other railroad.
UP “City of Everywhere”, Cheyenne to Green River, Summer 1970
Type of Car
Storage Mail
Baggage-Mail
Baggage-Mail
Baggage-Mail
Baggage-Dormitory
Sleeper (10-6)
Sleeper (10-6)
Sleeper (10-6)
Sleeper (10-6)
Sleeper (5-2-2)
Diner
Dome Lounge
Dome Coach
Coach
Coach
Coach
Coach
Coach
Coach
Coach
Diner
Sleeper (dorm)
Coach
Sleeper (10-6)
Dome Coach
Coach
Baggage-Mail"
from: https://www.model160.com/workbench/n-scale-passenger-modeling/passenger-consist-a-look-at-ups-city-of-los-angeles-1955-1971/