Cable Car Aerial View

The world's longest operable cableway is the Forsby-Köping limestone cableway in Sweden at 42 km (26 mi). The longest ever in operation was the 96 km (60 mi) Kristineberg-Boliden ropeway conveyor in Sweden. One of its 8 sections has been converted to a gondola lift and is still operating as the 13.2 km Norsjö aerial tramway making it the world's longest passenger cableway.
Also worth mentioning are Skyrail Rainforest Cableway, a gondola lift in Australia is 7.5 km long (two sections), and the Swiss Gondelbahn Grindelwald-Männlichen is 6.2 km long (two sections). The longest reversible aerial tramway built in one section only is Wings of Tatev in Armenia at 5.7 km (3.5 mi).