Devil’s Backbone – Sierra de San Pedro Mártir
Knife-edge granite ridges to Mexico's highest peak
The Devil’s Backbone lives up to its name—a white-knuckle ridge route that cuts through the Sierra de San Pedro Mártir to within striking distance of Mexico’s highest peak, Picacho del Diablo. The trail follows an ancient mining road that clings to exposed granite ridgelines, with thousand-foot drop-offs on both sides and technical rock steps that’ll test your spotter’s nerves and your vehicle’s approach angles.
This is difficult terrain requiring high-clearance 4WD with skid plates and good tires—the granite can slice sidewalls without warning. Spring and fall offer the best conditions, though snow can close the high country well into May. No permits needed, but fuel up in Ensenada and carry extra water. The payoff is camping under some of the darkest skies in North America and bragging rights on one of Baja’s gnarliest technical challenges.
Trail Specs
| Difficulty | Difficult |
|---|---|
| Trail Type | Technical 4x4 |
| Surface | Rock |
| Features | Camping, High Altitude, Remote, Scenic |
| Length (miles) | 35 mi / 56.3 km |
| Duration | 2 days |
| Max elevation (ft) | 9200 ft |
| Best season | April-October |
| Minimum vehicle | High-clearance 4WD with skid plates |
| Nearest town | Ensenada, Baja California |
| Land manager | Parque Nacional Sierra de San Pedro Mártir |
| Permit required | No |
| Cell service | None |
| Water crossings | No |
| 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 Tacoma or 4Runner run Devil's Backbone, or does it need a lift?
Stock is marginal — factory skid plates are essential, but low-hanging bumpers and limited articulation will get punished on the granite rock sections. A mild lift (2-3 inches) with all-terrain tires makes a real difference; a stock crossover or light-duty SUV has no business here.
When is Devil's Backbone accessible and what closes it?
April through October is the reliable window. Snow closes the upper sections from November through March, and the granite ridgeline at 9,200 ft holds ice longer than you'd expect. Don't push the shoulder seasons without checking recent conditions from someone who's physically been there.
Do you need a permit to drive and camp in Sierra de San Pedro Mártir?
Yes — this is a national park (Parque Nacional Sierra de San Pedro Mártir) and entry fees are required at the park gate. As of recent visits the fee is a few hundred pesos per vehicle; camping is permitted dispersed within the park but confirm current regulations at the gate since Mexican park policies can change without much notice online.
What's the hardest section and what actually makes it technical?
The knife-edge granite ridge traversal is the crux — exposed shelves with steep drop-offs on both sides, loose rock, and no room for error with vehicle width. One wrong line and you're high-centered on granite with no recovery anchor nearby; this is the section that has turned experienced drivers around.
How far out is the nearest fuel and is 35 miles enough range to worry about?
Ensenada is your last reliable fuel stop, roughly 100+ miles from the trailhead — carry extra fuel. Cell service is nonexistent on the trail, so downloaded offline maps (iOverlander, Gaia) and a satellite communicator aren't optional luxuries on a 2-day remote run in Baja.
Trail track
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