The 434 Radlje – Radeljski prelaz road is situated in northern Slovenia, beginning near the village of Zgornja Vižinga and ascending to the Radlpass (Radeljski prelaz), which marks the border with Austria. The route passes through the settlement of Koroška cesta before reaching the mountain pass at an elevation of 661 m (2,169 ft). The road is positioned within the eastern Alps and serves as a key connection between the Drava Valley and the Austrian region of Styria. An interactive map showing the precise route of the 434 Radlje – Radeljski prelaz road can be found at the end of this article.

This mountain pass road extends for approximately 6.2 km (3.9 miles), with a surface composed entirely of asphalt. The quality of the road surface is generally excellent, providing a smooth and reliable riding experience. The road features two lanes throughout its length (about 100%), with the majority of the route being wide (about 73%), and a smaller portion classified as medium width (about 26%). There are no notably narrow sections. The route is moderately curvy, offering a mix of gentle and more pronounced bends, but it is not considered extremely twisty. Riders will encounter a maximum elevation of 665 m (2,182 ft), with the lowest point at 349 m (1,145 ft). The road passes through inhabited areas for roughly 31% of its length, with the remainder traversing forested and mountainous terrain. Speed limits vary along the route, typically set at 50 km/h (31 mph), 90 km/h (56 mph), and 40 km/h (25 mph) depending on the section.

The highlight of the route is the crossing of the Radlpass (Radeljski prelaz), a historic border pass between Slovenia and Austria. The road traverses several notable mountain ranges, including the Alps, Koralpe, Poßruck / Kozjak, and the Lavanttaler Alpen. The region is characterized by rolling hills, dense forests, and panoramic views of the alpine landscape. While the road itself is primarily a transit route, the surrounding area offers opportunities for exploration, including hiking in the Kozjak hills and visiting the nearby town of Radlje ob Dravi, which features attractions such as the Radlje ob Dravi Water Park.

The 434 Radlje – Radeljski prelaz road is generally open to motorcyclists year-round, as it serves as an important cross-border connection. However, temporary closures may occur due to adverse weather conditions, particularly during winter months when snow and ice can impact the pass. There are no permanent restrictions for motorcycles on this route. Riders are advised to check local traffic updates or the Slovenian Traffic Information Center for current road conditions and any event-related closures before planning their journey.

There is currently no toll or entrance fee required for motorcycles to use the 434 Radlje – Radeljski prelaz road. However, toll conditions may change in the future, especially for cross-border routes. For the most up-to-date information on road tolls and entrance fees in Slovenia, riders should consult the official DARS (Motorway Company in the Republic of Slovenia) website. It is also advisable to verify requirements for vignettes or other permits if continuing travel into Austria.