Ruta 40 – Patagonia Section

The gas station attendant in Bariloche shakes his head when you tell him you’re driving Ruta 40 straight south to El Chaltén. “Mucho viento,” he says, making a whooshing sound. He’s not wrong. The 930-mile ribbon of asphalt and ripio that runs down Argentina’s spine will batter you with Patagonian winds that can knock a truck sideways, but that’s just the beginning. The real test isn’t the main highway—any reliable vehicle with all-terrain tires can handle that. The real test is when you turn off onto those unmarked side tracks that lead to Laguna del Diamante or the base camps below Fitz Roy, where high clearance becomes essential and your Spanish better be good enough to ask for help.

Ruta 40’s Patagonia section is a 10-14 day commitment through some of the most remote country on the continent. Fuel stops come every 150 miles if you’re lucky, sometimes less, and between Gobernador Gregores and Tres Lagos you’ll go 200 miles seeing nothing but guanaco herds and the occasional estancia gate. Cell service exists in theory around the bigger towns like El Calafate, but plan on radio silence for most of the journey. The roadway itself shifts between decent pavement and washboard gravel that’ll rattle your teeth loose, with river crossings that can turn nasty after spring snowmelt or summer storms. November through March gives you the best shot at decent weather, though “decent” in Patagonia means 40-mph crosswinds on a calm day.

The highway serves as your spine, but the vertebrae are those side routes that branch west toward the Andes. Some lead to established campgrounds and tourist stops, others peter out at abandoned homesteads or military checkpoints that haven’t seen traffic since the Dirty War. Dispersed camping is legal and necessary—you’ll find windbreaks behind rock outcrops and next to the scattered lenga forests, always with one eye on the weather. The Argentine DNV maintains the main route, but don’t expect them to come looking if you break down on a side track 50 kilometers from nowhere.

This isn’t a technical trail in the rock-crawling sense, but it’ll test your mechanical sympathy and your patience. You’ll drive through landscapes that look like another planet—the basalt towers of El Chaltén rising from endless pampas, condors circling overhead, and not another human for hours at a time. If you want Instagram-worthy vistas without the crowds of Torres del Paine across the border, and you can handle being truly alone with your thoughts and your vehicle, Ruta 40 delivers. Just bring extra fuel, spare parts, and respect for the distances involved.