Road D25C: The Abandoned 13% Shortcut at Col de Pailhères
Located on the border of the Aude and Ariège departments in southwestern France, Road D25C is a short but extreme mountain track. Situated entirely above 1,900m sea level, this route was originally designed as a high-altitude shortcut between Col de Pailhères and Col des Trabesses.
| Road facts: Road D25C | |
|---|---|
| Location | Aude / Ariège border, France |
| Elevation | Over 1,900 m |
| Length | 550 meters |
| Elevation Gain | 72 meters |
| Avg Gradient | 13.09% |
Why is Road D25C closed to traffic?
Due to extreme geological instability and hazardous driving conditions, Road D25C has been permanently decommissioned and bypassed by the modern D25 road. The authorities have installed physical barriers and large boulders to block access from both ends. The road is exceptionally narrow, with insufficient width for two vehicles to pass, and is flanked by a dangerous unprotected drop. The area remains under high risk of rock slides, which frequently deposit debris onto the aging asphalt surface.
How steep is the abandoned D25C track?
The drive is remarkably steep for such a short distance. Over its 550-meter length, the road gains 72 meters in elevation, resulting in a sustained average gradient of 13.09%. This incline, combined with the lack of maintenance and the narrow shelf construction, made the road technically unmanageable for standard traffic. Currently, a "No Entry" sign (R-0) and directional arrows divert all vehicles toward the safer, wider bypass of the main D25 highway heading to Ax-les-Thermes.
Logistics and Current Status
There is strictly no motorized access allowed on Road D25C. The track is no longer maintained, and its structural integrity is compromised by the freeze-thaw cycles typical of the 1,900m altitude. For drivers crossing the Pyrenees between Aude and Ariège, the D25 road is the only legal and safe alternative. While the D25C remains a point of interest due to its historical use as a shortcut, attempting to bypass the barriers is highly dangerous due to the narrow pavement and the constant threat of further rockfalls from the overhanging cliffs.
Winter Conditions and Elevation Hazards
At nearly 2,000 meters, this section of the Pyrenees is buried under deep snow from late October until June. Even when the main D25 is cleared for transit, the abandoned D25C remains completely impassable. The thin air and extreme exposure at this altitude mean that weather conditions can shift from clear to whiteout in minutes. For logistical planning, always rely on the status of the Col de Pailhères, as it dictates the accessibility of this entire mountain massif.