Driving the SP335 to Colle Bettone: A steep Piedmont challenge
Located in the rugged Province of Cuneo, in the Italian region of Piedmont, the drive to Colle Bettone is a hidden technical test for any mountain driver. Reaching an elevation of 1,834m (6,017ft) above sea level, the road—known as the Strada Provinciale 335 (SP335)—is a winding path that cuts through the base of Monte Bettone. It is a route where the peace of the Alps is constantly interrupted by the reality of a narrow, crumbling pavement and ramps that push standard engines to their limit.
| Road facts: Colle Bettone (SP335) | |
|---|---|
| Location | Cuneo, Piedmont (Italy) |
| Elevation | 1,834 m (6,017 ft) |
| Length | 12.4 km (from Stroppo) |
| Max Gradient | 15% |
| Hairpin Turns | 16 |
How punishing are the 15% ramps of Colle Bettone?
The 12.4 km ascent from Stroppo is far more difficult than the 6.98% average gradient suggests. The SP335 is an irregular climb where long, moderate stretches are suddenly broken by brutal ramps hitting 15% incline. As seen in the local topography, the asphalt is narrow and degraded, with cracked sections that will test your vehicle's suspension and tire grip. With 16 tight hairpin turns carved into the mountainside, you need to stay in a low gear to maintain torque. If you meet a local furgoneta coming down, you'll likely have to reverse on a steep slope, as the road is often too narrow for two vehicles to pass comfortably.
What are the primary hazards on the narrow SP335?
The road to Colle Bettone is a high-altitude balcony that lacks modern safety infrastructure. The primary hazard is the combination of the narrow track and the unprotected drops into the Piedmont valleys. The edges of the road are often soft and eroding, meaning one steering error could send your wheels off the pavement. During the summer, the heat can cause your cooling system to struggle on the 15% sectors, while the winter brings heavy snow that makes the pass completely impassable. Sudden thunderstorms are also common in Cuneo, turning the dust and debris on the SP335 into a slick, dangerous film that makes the hairpins a nightmare for traction.
How to handle the 16 hairpins on the descent to Stroppo?
Coming down from 1,834m is a serious test for your braking system. The 12.4 km descent is sustained, and the 15% sections will cause your brake pads to smoke if you rely on the pedal alone. To avoid dangerous brake fade, you must use heavy engine braking and pick your line carefully through the broken asphalt. Watch out for rockfall debris in the middle of the hairpins and stay alert for sheep or cattle that often wander onto the road near the summit. In this part of Piedmont, the road is a test of mechanical preservation—stay slow, keep it in gear, and respect the vertical drop at every turn.