Ruta Nacional 40 Paso del Viento High Route
High plateau crossing with serious river fords
The Paso del Viento section of Ruta Nacional 40 cuts through some of Neuquén’s most unforgiving plateau country, where relentless winds and sudden weather changes test both machine and driver. This 47-kilometer stretch between Zapala and the Cordillera del Viento massif climbs steadily through volcanic badlands and exposed steppes, with the notorious Río Neuquén crossing at Bajada Colorada presenting the route’s biggest challenge when spring snowmelt turns it into a churning torrent.
Rated difficult due to high-altitude exposure, unpredictable river levels, and zero services between waypoints. Stock high-clearance 4WD minimum, with recovery gear and extra fuel essential. Best tackled late summer through early fall when river levels drop and weather windows extend. The reward is uncompromised solitude in one of Argentina’s most geologically dramatic regions, with views of snow-capped Andean peaks stretching to the Chilean border.
Trail Specs
| Difficulty | Difficult |
|---|---|
| Trail Type | Overland Route |
| Surface | Mixed |
| Features | High Altitude, Remote, Scenic, Water Crossings |
| Length (miles) | 29 mi / 47 km |
| Duration | 1-2 days |
| Max elevation (ft) | 6890 ft |
| Best season | March-May |
| Minimum vehicle | High-clearance 4WD |
| Nearest town | Zapala, Neuquén |
| Land manager | Vialidad Nacional Argentina |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Start coordinates | |
| End coordinates | |
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| Find on Google | Search on Google → |
Location
Trail Conditions
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Frequently asked questions
Can a stock Hilux or 4Runner run this route, or do I need a built rig?
A stock high-clearance 4WD will get through under dry conditions, but the river fords demand solid ground clearance and good all-terrain tires at minimum. Lifted rigs with a snorkel have a real advantage when those fords run high — don't roll in on street rubber thinking it'll be fine.
When is this route passable and what kills access?
March through May is the sweet spot — snowmelt has slowed, fords are lower, and the plateau weather is more stable. Winter brings snow and ice at elevation, and spring snowmelt can make the river crossings genuinely dangerous or impassable. Avoid it July through September unless you're prepared for full winter conditions.
Do I need a permit to run this section of RN40?
No permit is required — this is a national route managed by Vialidad Nacional Argentina and it's open access. That said, crossing into any protected or provincial land adjacent to the route may carry its own rules, so check locally in Zapala before you roll out.
What's the hardest section and what should I actually be ready for?
The river fords are the crux — water depth and current vary significantly with season and recent rainfall, and there are no bridges to bail you out. Probe before you drive, check your recovery gear, and have a plan if a vehicle gets swept or swamped; you're on a 29-mile plateau with zero cell service and help is not close.
Where do I top off fuel and water before starting, and is there any water on route?
Zapala is your last reliable fuel stop — fill completely before heading out, as there are no services on this stretch. Water crossings exist on route but treat everything before drinking; carry enough reserve to cover your full duration in case you need to stop and sort a mechanical.
Trail track
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