El Espinazo del Diablo (Devil's Backbone) - MEX 40 Libre
The crown jewel of North American motorcycle twisties and one of the world's supreme ribbons of tarmac. MEX 40 Libre rides the knife-edge ridge of the Sierra Madre Occidental, offering over 2,000 curves with sheer 3,000-foot vertical drops on BOTH sides of the motorcycle simultaneously at the famed Espinazo del Diablo viewpoint. Plunges nearly 9,000 vertical feet from cold alpine pine forests down into humid tropical jungle outside Mazatlán. Since commercial freight trucks now use the modern MEX 40D tollway, the old Libre road is virtually empty of traffic, creating a private racetrack sensation. Road Quality: Technical, narrow asphalt with tight radius hairpins; expect occasional rockfall debris on corners, pine needle scatter in shaded bends, and mountain fog. Safety & Military Checkpoints: Permanent SEDENA military checkpoint at the Durango/Sinaloa state line; strictly avoid riding after dark; stay in your lane around blind cliffs as local pickups occasionally drift across the center line. Fuel Range: Top off completely in El Salto; limited fuel until Concordia; maintain at least a 140-mile range.
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Historic 1830s gold rush capital framed by red-brick sidewalks and antebellum architecture. Serves as the southern gateway launching pad for GA-60 and Blood Mountain. Riders gather on the shaded balcony of Bourbon Street Grille to swap tales while watching a steady parade of touring rigs circle the historic square.
Tank-Bag Quick Reference Sheet
Frequently Asked Questions
How many curves and miles is El Espinazo del Diablo (Devil's Backbone) - MEX 40 Libre? ▼
El Espinazo del Diablo (Devil's Backbone) - MEX 40 Libre spans 135 miles and packs approximately 2150 curves (15.9 curves per mile) with an elevation delta of 150 ft - 9,080 ft (Puerta de Mazatlán / La Ciudad) and technical rating 10/10.
Where are the start and end coordinates? ▼
The route starts at El Salto, Durango (Latitude 23.7844, Longitude -105.3639) and finishes at Concordia / Mazatlán, Sinaloa (Latitude 23.2889, Longitude -106.0664).
How can I download the GPX file for GPS navigation? ▼
Click the "Download Free GPX" button on this guide. The standard XML file is 100% free and ready to load into Garmin zūmo, BMW Motorrad Connected, Rever, Scenic, or Google Maps.