Facts

Location: Veneto, Italy, Europe

Length: 13 km

Built:  February to June 1918

Wide: 5 m, only 1 lane

Surface: asphalt

Surface quality (out of 5): 4

Highest point: 706 m

Operating times: throughout the year

SP 635 Strada Statale 635 del Passo di San Boldo

Route: Trichiana – Tovena

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Description

The San Boldo Pass is a small but amazing mountain pass located at the southern edge of the Italian Alps. It connects the towns of Trichiana (329 m), in the Veneto region with Tovena (272 m) in the Cison di Valmarino region, over a distance of 13 km.

San Boldo Pass is one of the most incredible and daring architectural works of the First World War and is famous for its dense series of bends carved straight into the mountain. It was completed in record time, less than 3 months, hence the nickname “The Road of 100 days”.

This road has always had a considerable historic importance. It dates back to Roman times and was flanked at that time by several watchtowers. You can still find the ruins of a Byzantine fort in the area.

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The mountain pass is called Strada Statale 635 del Passo di San Boldo (SP 635). The traffic is regulated by several sets of lights and only one lane is available. There is also a speed limit of 30 km/h (19 mph) and a height limit of 3.2 m (10.5 ft). The height limit was imposed after many buses repeatedly got stuck in the tunnels.

The ascent to the San Boldo Pass begins with a comfortable gradient which suddenly becomes much steeper as the halfway point is reached. On a short stretch of less than 1 km you will find a number of 7 challenging hairpin turns. The road then disappears into a series of spectacular hairpins tunneled out of the rock, which make “The Road of 100 days” famous in the world of high passes.

Once the summit is reached, the field of vision is dominated by beautiful alpine pastures, grazing cattle and small, wooden cabins.

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San Boldo Pass definitely leaves a lasting impression on anyone due to it’s breathtaking views and is very popular with motorcyclists, cyclists and drivers as well. It’s open throughout the year but can be closed anytime in case of heavy snow falls, especially during winter.

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Photos: socialwelfareagency.org, velominati.com, bp.blogspot.com, alpenrennradtouren.de, ilpaletto.com,

motovoyager.net, panoramio.com

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