Paso Roballos Border Route
Extreme Andes crossing to Argentina's back door
The Paso Roballos route climbs from Chile’s Copiapó Valley through some of the most desolate Andean terrain you’ll find, topping out at 4,580 meters before dropping into Argentina’s Catamarca province. This isn’t your typical border crossing — the route threads between volcanic peaks and ancient mining camps, with the road deteriorating to loose rock and switchbacks as you approach Roballos Pass itself.
This is expert-level terrain requiring full 4WD with rock sliders and recovery gear. The altitude hits hard, weather changes fast, and help is nonexistent. Best tackled April through October when snow doesn’t block the pass. Carry extra fuel, water for 3+ days, and emergency shelter. You’ll earn bragging rights crossing one of South America’s most challenging international passages, plus access to Argentina’s remote Puna plateau.
Trail Specs
| Difficulty | Expert |
|---|---|
| Trail Type | Technical 4x4 |
| Surface | Rock |
| Features | High Altitude, Historic, Remote |
| Length (miles) | 78 mi / 125.5 km |
| Duration | 2-3 days |
| Max elevation (ft) | 15026 ft |
| Best season | April-October |
| Minimum vehicle | Built 4WD with armor |
| Nearest town | Copiapó, Atacama |
| Land manager | Chilean Customs Authority |
| Permit required | No |
| Cell service | None |
| Water crossings | No |
| Dispersed camping | Yes |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a stock Tacoma or 4Runner handle Paso Roballos, or does the vehicle need to be built out?
Stock is not appropriate here. You need a purpose-built 4WD with skid plates, high-clearance suspension, and reinforced sidewalls at minimum — rocky technical sections at altitude will destroy unprotected undercarriages. A recovery kit, dual spare tires, and a snorkel are strongly advised.
When is Paso Roballos actually passable, and what closes it?
April through October is the reliable window. Andean winter storms from November through March can dump snow at the 4,580-meter crossing with zero warning, making the route impassable and genuinely life-threatening. Do not push the shoulder months without current local intel.
Do you need permits or paperwork to drive this border crossing into Argentina?
Yes — this is an active international border controlled by Chilean Customs (Aduana). You must have your vehicle's documentation, passports, and any required customs declarations in order before departure. Confirm the crossing is officially open before you go; remote Andean border posts can be unstaffed or temporarily closed without public notice.
What is the hardest section of the trail and what makes it technical?
The approach to the 4,580-meter summit crossing is the crux — sustained loose rock, shelf road exposure, and sections where the 'road' is little more than a tire track across broken talus. Altitude compounds everything: reduced engine power, slower recovery from exertion, and faster onset of mechanical heat stress at that elevation.
How much fuel do you need to carry, and is there any water on the route?
Copiapó is your last guaranteed fuel stop — plan for the full 78-mile route plus a significant safety margin, as there are no services between the trailhead and the Argentine side. Water sources exist but are scarce and unreliable at altitude; carry a minimum of 10 liters per person and treat anything you collect from the terrain.
Trail track
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