The 417 Šmartno–Mirna road is situated in central Slovenia, connecting the settlements of Šmartno and Mirna via the Javorski Pil mountain pass. The route passes through a series of smaller settlements, including Gabrovka, Mala Kostrevnica, Cesta na Fužine, Klanec pri Gabrovki, and Grumova cesta. The road lies within reach of two notable towns: Trebnje, located approximately 6.4 km (4 miles) from the starting point, and Litija, about 1.8 km (1.1 miles) from the endpoint. The region is characterized by rolling hills, forested landscapes, and the presence of the Mirna River, which the road parallels for a portion of its length. An interactive map showing the road can be found at the end of the article.

The 417 Šmartno–Mirna route extends for approximately 26.5 km (16.5 miles), offering a moderately twisty riding experience. The road’s curviness is best described as gently winding, with a mix of gradual and sharper bends, particularly as it ascends and descends the Javorski Pil pass. The surface is asphalt and is generally of high quality, with most sections rated as very good. Riders will encounter a combination of one-lane (about 53%) and two-lane (about 35%) segments, with the majority of the road being wide (about 44%) or of medium width (about 40%). Narrow sections are limited (about 10%), but caution is advised, especially in areas with reduced visibility or increased local traffic. The route passes through inhabited areas for roughly a quarter of its length, providing occasional opportunities for rest or refueling in small villages.

The highlight of this route is the Javorski Pil mountain pass, which reaches an elevation of 580 m (1,903 ft). The ascent and descent of the pass offer riders a series of engaging curves and elevation changes, making it a favored segment for those who appreciate technical riding. The road also runs adjacent to the Mirna River for approximately 10% of its length, adding to the route’s natural appeal. The river ultimately flows into the Sava, Slovenia’s longest river. The surrounding landscape is predominantly rural, with forested slopes and occasional open vistas, especially near the summit of the pass.

The 417 Šmartno–Mirna (Javorski Pil Pass) road is open to motorcycles and other vehicles throughout the year. There are no regular seasonal closures, but riders should be aware that winter conditions (snow and ice) can make the pass hazardous or temporarily impassable, particularly from late autumn to early spring. Local authorities may implement short-term closures for maintenance or during adverse weather events. It is advisable to check local traffic updates before planning a ride, especially in winter months. No tolls or entrance fees are currently required to use this road, but toll conditions may change in the future. For up-to-date information on road tolls and fees in Slovenia, refer to the official DARS website.

While the route itself is the primary attraction for motorcyclists, the surrounding area offers several points of interest. The town of Trebnje is known for its cultural events and local art scene, while Litija provides access to the Sava River and regional hiking trails. The settlements along the route, such as Gabrovka and Mala Kostrevnica, offer a glimpse into rural Slovenian life. Riders interested in extending their journey can explore the broader Lower Carniola region, which is noted for its vineyards and traditional cuisine. For those seeking more information about the area, resources such as Lonely Planet provide comprehensive travel guides.