Peninsula Mitre Cabo San Diego
Argentina's easternmost point via Tierra del Fuego's wildest track
The Peninsula Mitre track dead-ends at Cabo San Diego, the easternmost point of mainland Argentina, but getting there requires crossing 40 miles of the most challenging terrain in Tierra del Fuego. This isn’t road — it’s a series of cattle tracks and oil exploration routes through peat bogs deep enough to swallow vehicles whole, tidal rivers that change hourly, and wind-scoured plains where 80mph gusts are normal. The skeletal remains of the cargo ship Desdémona have been rusting on the beach since 1985, and the automated lighthouse at Cabo San Diego operates in complete isolation.
Extreme difficulty demands locked differentials, aggressive mud tires, and expedition-level recovery gear. Tides dictate river crossing schedules — check charts religiously. Summer only (December-March), and even then expect sideways rain and freezing temperatures. Fuel, food, and spare parts for the entire expedition; nearest services are in Ushuaia, 8 hours away. The payoff is stepping foot on wild Argentina’s final frontier, where southern right whales breach in the Estrecho de Le Maire and penguin colonies stretch to the horizon.
Trail Specs
| Difficulty | Extreme |
|---|---|
| Trail Type | Technical 4x4 |
| Surface | Mixed |
| Features | Remote, Scenic, Water Crossings |
| Length (miles) | 78 mi / 125.5 km |
| Duration | 4-5 days |
| Max elevation (ft) | 650 ft |
| Best season | December-March |
| Minimum vehicle | Modified 4WD with lockers and mud tires |
| Nearest town | Río Grande, Tierra del Fuego |
| Land manager | Tierra del Fuego Province |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| 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 stock Hilux or Land Cruiser handle this trail without modifications?
No. Stock vehicles will get swallowed by the peat bogs. You need lockers front and rear, aggressive mud tires, and high clearance at minimum — a snorkel is strongly advised given the river crossings and unpredictable bog depth.
Is the trail accessible outside of December through March?
Outside summer (December–March), the bogs become impassable and snowfall can trap you without any rescue access. April onwards, conditions deteriorate fast — don't gamble with a Tierra del Fuego winter out here.
Do you need a permit to drive Peninsula Mitre to Cabo San Diego?
Access falls under Tierra del Fuego Province jurisdiction and historically requires written permission from the provincial government or the estancia landowners whose property the route crosses — verify current requirements before departing from Río Grande, as this changes.
What's the hardest section and what makes it genuinely dangerous?
The peat bog sections mid-route are the real threat — they look drivable and aren't. Vehicles have sunk to the doors with no recovery possible without a second rig. The river crossings are serious too, but the bogs are where expeditions end early.
How far out do you need to carry fuel from Río Grande for the full 78-mile round trip?
There is zero fuel, zero resupply, and zero cell service on the entire route — carry enough fuel for at minimum 200 miles when accounting for low-range crawling through bogs and recovery work, plus emergency reserve. Río Grande is your last stop for everything.
Trail track
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