A Grueling Unpaved Road to the Summit of Colla d’Onzo

# Colla d'Onzo: A Thrilling Mountain Challenge

Ready for one of Italy's most intense driving experiences? The Colla d'Onzo mountain pass sits at 843m (2,765ft) in Liguria's Province of Savona—and it absolutely lives up to its reputation as a seriously demanding ride.

This 7.9 km (4.90 miles) stretch connecting Nasino to Capitolo-Costa runs straight up the mountainside with a relentless 10.24% average gradient. But here's the kicker: some sections kick up to a brutal 20%, making this pass no joke for unprepared drivers.

What makes it truly gnarly? The road is absurdly narrow—two medium-sized cars literally can't pass each other. You'd better be comfortable with tight reversing maneuvers, because you'll likely need them. Throw in mixed paved and unpaved sections, and conditions that get sketchy after rain, and you've got yourself a serious challenge.

Low-clearance vehicles? Skip this one entirely. The steep, winding terrain demands respect and solid driving skills. But if you're up for it, you'll experience one of northern Italy's most spectacular and unforgiving alpine routes—the kind of drive that gets your heart pumping and leaves you with an unforgettable story.