I have been in a few that have long hallways but am sure its probably on the strip and I have stayed in only a couple. The Orleans and Gold Coast have some long ones. At one point a few years ago I actually walked from end to end at the Orleans and counted off my steps. I know I was fairly accurate because thru the years I played a lot of baseball and sometimes would check to see how long the fences were compared to the sign. When I walked down the foul line I was always right on at 30 steps to first base which meant 3 feet per step. Anyway I walked it off and was amazed how far it was but now I can't remember what the total was! Anyway I am curious if anyone else ever did this and remembers how far it was. I asked this on google and a few pictures of MGM came up which I heard may be the longest. Also had the Venetian and Orleans too. Obviously this was not scientific. Would be interested in ideas or estimated distances.