As one of the world's longest roads, which route traverses Patagonia?

At 3,195 miles, Ruta 4 in Argentina is the country's longest highway and one of the longest in the world. Starting in the south at Cabo Vírgenes and ending in La Quiaca, you'll travel along Ruta 40 through the wayward plains of Patagonia, until you reach the mountaintops of the Andes.

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