[Scorpions Truck]

The longest I know is: "The Whrilwind live from Sheperd´s Bush Empire" by the band Transatlantic.
First song of this album lasts 1h 20mins 16sec


Not only a long song, also one of the three best live shows I´ve ever seen. They started playing 8:00pm and show ended 20 mins after midnight with just an intermission of 15 mins. And don´t You think that was an extra extended show for the recording of the live DVD/CD, no, no - they did this on the entire tour, 29 Shows in 28 cities during 33 days...