Cordillera de la Costa Valparaíso to Aconcagua Traverse
Copper country climb from Pacific to Andes
This forgotten mining route climbs from Valparaíso’s Pacific coastline through the rugged Cordillera de la Costa, following pack mule trails used by 19th-century copper miners. The track winds through eucalyptus groves and scrubland toward the Aconcagua valley, passing the abandoned El Soldado mine complex where German engineers once extracted high-grade copper ore. Expect steep switchbacks and loose shale sections as you navigate past slag piles and concrete foundations of the old processing plant.
Stock high-clearance vehicles can handle most sections, though the final descent requires careful line choice through rocky drainage cuts. Dry season (November-March) offers the best conditions, as winter rains turn the clay sections into boot-sucking quagmires. No permits needed for this route, but carry extra water and fuel for the 65-kilometer traverse. The payoff comes at sunset when you’re looking back at the Pacific from 2,800 meters, copper tailings glowing amber in the dying light.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Overland Route |
| Surface | Mixed |
| Features | High Altitude, Historic, Remote, Scenic |
| Length (miles) | 40 mi / 64.4 km |
| Duration | 1-2 days |
| Max elevation (ft) | 9186 ft |
| Best season | November-March |
| Minimum vehicle | Stock 4WD high-clearance |
| Nearest town | Valparaíso, Valparaíso |
| Land manager | Private mining concessions |
| Permit required | No |
| Cell service | Spotty |
| 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 handle this route without modifications?
Yes — a stock 4WD with decent clearance (8+ inches) will manage the mixed surface, but the mining road sections include loose shale and eroded ruts that will punish low-clearance vehicles. Aired-down all-terrain tires are strongly advised.
Is the route passable in June or July?
No. Winter months bring snow and ice above 6,000 ft, and the higher sections become impassable without serious equipment. Stick to November through March when the route is reliably open and dry.
Do you need permits to drive through the mining concession land?
Much of the route crosses private mining concessions — there's no centralized permit system, but access points may be gated by individual operators. Carry ID, be prepared to talk your way through or find alternate lines, and don't count on guaranteed passage.
What's the hardest section and what makes it technical?
The climb out of the Coastal Range toward the Aconcagua foothills includes steep switchbacks on loose gravel and exposed shelf road with significant drop-offs. Traction loss on descent is the real risk — low range and engine braking are not optional here.
Are there reliable water sources along the route, or do I need to carry everything from Valparaíso?
There are seasonal stream crossings mid-route, but mining activity in the area means water quality is questionable — treat everything or carry your own from town. Budget for at least 5-6 liters per person per day given the dry summer heat at altitude.
Trail track
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