Passo San Boldo (The Road of 100 Days / 5 Tunnel Hairpins)
An engineering marvel built by the Austro-Hungarian army in just 100 days during WWI. The southern ramp climbs a nearly vertical rock amphitheater using five interconnected loop tunnels cut into the rock face, each containing a sharp hairpin turn regulated by timed traffic lights. Exits into the rolling vineyards of the Prosecco wine hills.
Join free with 1-tap Google or Apple login to bookmark this route across your devices.
Save Route (Free)
Certified Motorcycle Repair
Rider-Friendly Lodging
A storied Acadia National Park tradition dating back to the 1890s. Sitting on the gentle lawn overlooking the crystal-clear glacial waters of Jordan Pond, framed symmetrically by the twin glacial peaks of the North and South Bubbles mountains.
Tank-Bag Quick Reference Sheet
Frequently Asked Questions
How many curves and miles is Passo San Boldo (The Road of 100 Days / 5 Tunnel Hairpins)? ▼
Passo San Boldo (The Road of 100 Days / 5 Tunnel Hairpins) spans 11 miles and packs approximately 38 curves (3.5 curves per mile) with an elevation delta of 820 ft - 2,316 ft (San Boldo Summit 706m) and technical rating 8/10.
Where are the start and end coordinates? ▼
The route starts at Trichiana / Belluno Valley, Italy (Latitude 46.0739, Longitude 12.1333) and finishes at Tovena, Treviso (Prosecco Hills), Italy (Latitude 45.9861, Longitude 12.1767).
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.