Paso Roballos — Cochrane to Balmaceda via the Northern Ice Fields Plateau and Chilean Border Crossing
Patagonia's forgotten border crossing. No crowds, no services.
Paso Roballos sits at roughly 1,000 metres on the Chile–Argentina divide south of Cochrane, connecting the Aysén Region of Chilean Patagonia with Ruta 40 country near Bajo Caracoles in Santa Cruz Province. The Chilean approach from Cochrane runs about 100 kilometres of gravel and rough dirt through lenga beech forests and open pampa, crossing the border at a tiny unmanned post before dropping into the Argentine steppe. Winds here are Patagonian standard — violent and relentless — and the road surface alternates between loose gravel, mud bogs after rain, and exposed volcanic rock. The border zone itself offers unobstructed views of unnamed glaciers hanging off the Northern Patagonian Ice Field to the west.
This is a genuine expedition crossing, not a weekend run. The nearest fuel on the Argentine side is Bajo Caracoles, roughly 130 kilometres from the border — a small station with limited supply and no guarantee of stock. Carry a minimum 40-litre reserve. The crossing is passable November through March in most years; snow and mud close it without notice in shoulder months. No services, no cell service, no rescue. A standard high-clearance 4WD handles it in dry conditions, but mud tyres and recovery gear are non-negotiable. The border post requires advance paperwork on both sides — contact Sernapesca and Argentine border authorities before you go.
Trail Specs
| Difficulty | Difficult |
|---|---|
| Trail Type | High Clearance, Overland Route |
| Surface | Dirt, Gravel, Rock |
| Features | Camping, High Altitude, Remote, Scenic |
| Length (miles) | 137 mi / 220 km |
| Duration | 2-3 days |
| Max elevation (ft) | 3412 ft |
| Best season | November-March |
| Minimum vehicle | High-clearance 4WD with mud tyres and recovery gear |
| Nearest town | Cochrane, Aysén Region, Chile |
| Land manager | Dirección de Vialidad Chile / Vialidad Nacional Argentina |
| Permit required | Yes |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Official sources | Chile official border crossing info |
| Verified | |
| Start coordinates | |
| End coordinates | |
| Copy both for Google Maps directionsClick to copy the directions URL · or open it directly in a new tab | |
| Find on Google | Search on Google → |
Location
Trail Conditions
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Frequently asked questions
Can a lifted Tacoma or stock 4Runner handle Paso Roballos?
A stock 4Runner will struggle — this route needs genuine high-clearance 4WD, mud tyres, and recovery gear as a minimum. A lifted Tacoma with lockers is a solid choice; a stock crossover is a hard no. Bring a hi-lift, traction boards, and a snatch strap minimum.
When is Paso Roballos actually passable?
November through March is the window — Patagonian summer. Outside those months expect snow on the plateau, frozen river crossings, and a border post that may not be staffed. Even in summer, storms can roll in fast and turn the dirt sections to grease overnight.
Do you need a permit to cross at Paso Roballos, and is the border post always open?
Yes — you need valid entry/exit documentation for both Chile and Argentina, and your vehicle papers must be in order for international crossing. The border post has limited operating hours and is not 24/7; check current hours directly with Chile's official border crossing authority at pasosfronterizos.gov.cl before you leave Cochrane, because showing up outside hours means you're sleeping there.
What's the hardest section of the route and what makes it gnarly?
The plateau crossing near the Northern Ice Fields is where it gets serious — exposed, high-altitude terrain with no shelter, combined with soft volcanic soil and ruts that deepen fast after any rain. River crossings on the Argentine side can rise quickly with glacial melt, and there's no one coming to help if you stuff it.
How far is the nearest fuel stop, and can you resupply water on trail?
Fuel up in Cochrane before you leave — there is nothing on route or at the border, and the nearest Argentine fuel on the far side is a serious distance from the crossing. Water crossings exist on trail, but treat everything before drinking; glacial runoff looks clean and will still ruin your trip.
Trail track
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