Length 23.4 km
Time needed
Time needed 02:00
Največja strmina vzpona[%]
Greatest slope of the ascent: 5 %
Greatest slope of the descent: 11 %
Average slope of the ascent: 4 %
Length of ascents above 5%: 2.90 km
The lowest point of the route: 543 m
The highest point of the route: 326 m
Difference in altitude: 361 m
Poraba kalorij
Consumption of energy for men: 4070 kJ (972 kcal)
Consumption of energy for women: 3316 kJ (792 kcal)
Difficulty: Very demanding
Quality of the surface
Quality of the surface: Mixture
Type of bike: Trek bike
Short description

This very demanding cycling route runs around the stunning Radenci Plain, which is the most beautiful in spring and autumn or after heavier downpours. The route mainly runs along the main road; however, the traffic is not heavy and thus it's very popular among cyclists. The section of the route on the plain takes turns with more demanding ascents and pleasant descents, and is never boring. Most cyclists visit it during summer, since a large section of the route runs through forests and higher altitude settlements, where it's considerably cooler in summer than in the valley.


Boštanj – Velika Račna – Mala Račna – Čušperk – Mala Ilova gora – Velika Ilova gora – Ravni dol – Trebnja gorica – Luče – Na šoli – Lobček – Boštanj

Radenci Plain (Radensko polje) Landscape Park and Boštanj Castle
This route begins in Boštanj, where you can park your car at the Grajski vrt Bar , , and at the very beginning check out the Church of St. Martin . There are also two information boards here on the Radenci Plain Landscape Park , and a signpost marking the surrounding places . Descend to the main road and if you look back, you'll be astonished by a magnificent view of the once mighty Boštanj Castle . Turn left at the crossroads onto the main road towards Velika Račna. The road runs at the foot of the hill and along the edge of the Radenci Plain.

In Velika Račna, there's the Church of St. Margaret . If you take a look at the top of its belfry, you'll notice a storks nest . More curious cyclists can turn left after the church towards the Kopanj Hill , on the top of which is the Church of the Assumption of Mary with a rectory. In Kopanj, there's also a renovated subsidiary elementary school. However, you can turn left after the fire station , and drive on to the Radenci Plain, which you'll cross on a cart track, and after a kilometre or so, you'll reach the foot of the hill with two springs of the Zelenka Stream, which meanders across the Radenci Plain. The caves Zatočna and Lazarjeva jama are located here. A bit further on, there's another cave, Viršnica. On your way back to Velika Račna , there's a mill called Vrbetov mlin in the direction towards Mala Račna. If you continue the route from the church in Velika Račna, you'll see a renovated old village well on the right side of the road .

From Velika Račna, continue to Mala Račna, where the road starts to ascend. There's the Church of Our Lady of Sorrows by the road in Čušperk . At the crossroads before the church, you can turn right and drive to the Old Castle (Stari grad) (Čušperk Castle) along a steep macadam path. You'll need to walk the last stretch of the path.
From Čušperk, you'll mainly drive on a plain terrain along a railway track. After crossing the railway for the second time, turn left at the crossroads and start ascending once more towards Mala Ilova Gora , . In this settlement, there's the Church of the Holy Cross and an interesting chapel at the crossroads . At this crossroads, stick to your left in the direction of Velika Ilova Gora. At the beginning of Velika Ilova Gora, there's an old abandoned elementary school, after which the road branches off to Ravni Dol. This is where your route is headed. If you wish to explore the village, go straight on and up the hill. In Velika Ilova Gora, there's the Church of the Holy Trinity .

Plain with a view
When you leave Velika Ilova Gora, turn towards Ravni Dol at the crossroads after the old school. We recommend taking a short break at this school and having a look at the surrounding hills . This is also the site of an astronomical observatory , . From Velika Ilova Gora, continue towards Ravni Dol.

You'll start descending in Ravni Dol. The path runs through the forest, where you can observe karst phenomena. The road is asphalt but still rather narrow. At the crossroads, asphalt comes to an end and a well maintained macadam path starts . Turn left and drive in the pleasant coolness of the forest for some more time. When you reach the welcoming board of the Municipally of Grosuplje, there's a turning to the right, which would take you to Polževo. You'll go there another time. But today, just continue straight on to the asphalt road and crossroads, where you need to stick to the direction of Grosuplje .

Pr' Mrtinet
Every true cyclist will make a stop at the Pr' Mrtinet Inn in Luče , where they'll greet their cyclist friends , . You're still descending along a road running along the shelter of the forest. At the crossroads to Ilova Gora, there's an NOB (national liberation struggle) monument; but you aren't going to Ilova Gora, as this is where you've come from, but you're headed straight into the valley, past Plešivica and through Lobček to Boštanj.


Boštanj Castle and Church of St. Martin , ,
The remnants of Boštanj Castle, originally called Zagradec, are located in Boštanjska vas. The castle was destroyed in the autumn of 1943 and later only partly renovated. Below, there's an early-Baroque Church of St. Martin; the church which stood here before was mentioned in sources from the 14th century. The church was renovated during the Baroque period. The equipment of the church is of utmost importance – the high black and gold altar from 1716, and both side-altars from the first half of the 18th century. The nave comprises tombs with tombstones of the family of the Blagaj counts, which was then the owner of Boštanj Castle.

Radenci Plain Landscape Park , , ,
The Radenci Plain, southeast of Grosuplje, has been formed during a millennium of interaction between nature and people. There, you can find typical karst phenomena, such as powerful karst springs and ponors. In spring and autumn, the plain becomes an intermittent lake. Winter with snow and ice gives it a special charm, while in summer, it thrives in wonderful colours. The plain is surrounded by steep forest slopes of the surrounding hills reaching as high as 300 metres and in its centre, the solitary hill of Kopanj is mysteriously rising. This area also hosts numerous rare and endangered plant and animal species. Due to the rich habitat and endangered species, the Radenci Plain is included in the European ecological area of Natura 2000. The area of the Radenci Plain Landscape park covers 16 square kilometres, while the plain itself is four kilometres long and one kilometre wide.

Church of St. Margaret
The Chapel of St. Margaret in Velika Račna was first mentioned in 1433. It was built as a vow to keep the constant floods at bay. It was renovate during the Baroque period. The chapel includes the tomb of the aristocratic family Lazarini.

Siberian iris
Siberian iris has a great symbolic character. Its natural sites are on the Radenci Plain. Iris is entirely dependent on people and sustainable use of soil and would disappear because other plants would overgrow it, if meadows where its sites are ceased to be cut. In this sense, Siberian iris symbolises the essence of the landscape park, which is quality and long-term coexistence and cooperation between nature and people, which has a great landscape, biotic and ecological value. The lower three leaves of an iris also represent three watercourses of the Radenci Plain (the Dobravka, the Zelenka and the Šica) and depict bays, meanders and islets emerging upon high waters.

Village well
The village well built in 1897 is located by the road in Velika Račna. The pump was renovated in 2011 upon the centenary of the Račna Volunteer Firefighter Association.

Kopanj with the Church of the Assumption of Mary
The morphological characteristic of the Račna local community and the entire Radenci Plain is the solitary hill of Kopanj, which rises 68 metres above the bottom of the plain and is the most beautiful example of a karst solitary hill. There used to be a prehistoric fort on this hill. From the remnants of the fort, the original Church of the Assumption of Mary, first mentioned in 1433, was erected. During the Turkish invasions, a wall, which has been partly preserved until today, was built around the church. Next to the church, there's a rectory, in which Dr. France Prešeren spent a few years of his childhood. Just below the top, an elementary school is located, where classes have been conducted since 1865. An attraction of Kopanj is also a well on the northern side, which springs ten metres above the level of the karst plain.

Caves of Viršnica, Lazarjeva and Zatočna jama (Šica cave system)
Upon their normal level, the waters of Šica disappear into Zatočna jama, while upon heavier and longer lasting downpours, they even disappear into Lazarjeva jama, which is 200 metres away. Above the cave, a collapse sinkhole of Viršnica, which water never reaches, is located. All three entrances form the cave system of Šica. The length of the system is 1,792 metres. It isn't known who discovered the caves. Due to the flooding of the Radenci Plain, the caves were first entered to widen the passages because the flow of the Šica through the cave system needed to be accelerated. The artificially formed path takes you to the wonderful entrance hall, which is geologically probably the most interesting, and further along artificial steps to the main passage of Viršnica. Viršnica is accessible in all weather conditions, as there is no danger of sudden floods. However, the dry period is still more appropriate for a visit if you wish to see the entire cave. We also recommend visiting the caves of Lazarjeva and Zatočna jama, which are interesting mainly due to the constant water activity.

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Old Castle (Čušperk Castle) and Chapel of Our Lady of Sorrows
The Old Castle above Čušperk built in the 12th century is one of the oldest castles in Slovenia. There used to be a regional court in this castle, which had great jurisdiction. After several peasant revolts and the great earthquake, the Auerspergs built a new castle in Čušperk in the 17th century. There are only some remnants left of the old castle walls, while only the Chapel of Our Lady of Sorrows, a part of the former outbuilding converted into flats and part of the wall are left of the new castle. The altar in the chapel consists of a traditional altar, the main painting by Anton Cebej and wall frescos made by a recognised painter, Niernberger, from Višnja Gora.

Church of the Holy Trinity
In Velika Ilova Gora, there's the Church of the Holy Trinity with three neat altars. The first record of it dates back to 1433 and St. Rupert is its main patron.

NOB monument (on school)
At the place where the monument is now located, the inhabitants of Žalna and the surrounding villages pledged allegiance to the Liberation front on 25 May 1942 and established two units of home guard of Žalna combatants' association and local community.


Boštanj Castle Bar , , ,
They manage the Boštanj Guest House (Prenočišča Boštanj) and co-organise traditional events in the area of the Radenci Plain. They offer guided tours of the Radenci Plain.

Pr' Mrtinet Day Bar , , ,
The Pr' Mrtinet Bar is located in Luče just by the road. It's known as a cyclists' bar. It offers various homemade dishes and seafood, grilled food and food from a wood-fired oven, dishes baked in a coal covered pot.

Lunca Inn
If you turn right off the route in Lobček, you'll drive straight to the Lunca Inn in Zagradec. Their menu includes homemade Slovenian dishes, dishes with game meat, fish dishes and seafood, freshwater fish, vegetarian dishes, grilled dishes. They have enough space to organise parties for large closed groups.

Well in Kopanj
The well doesn't dry up even during the greatest drought. Water is potable and according to folk tradition, has healing powers, mostly for the eyes. The patroness of the well is Our Lady of Lourdes, the statue of whom is placed in a small chapel above it.

About a giant in Kopanj
On the origin of Kopanj, an interesting story has been kept alive among people. Once upon a time a powerful giant lived on Limberk. In anger, he once grabbed the summit of Limberk and dragged it along the slope into the valley. Then he lost his strength, and left a lump of stones and soil in the middle of the field. Hence Kopanj emerged. It is still visible on Limberk where the giant tore off its summit. And on its slopes, there are the remnants of the stones which have broken off, as the giant was dragging the summit into the valley.


To Mrtinet for a sausage
A traditional cycling action organised by the Pr' Mrtinet Bar starts the last weekend in March and ends the first weekend in October. Everyone gets a free record sheet Pr' Mrtinet, where you need to gather 15 stamps. You get one stamp each day, which doesn't mean that you can't visit the bar more than once a day. When a participant gathers 15 stamps, the host, Pr' Mrtinet Bar, rewards him/her with a homemade sausage and, if you wish, another record sheet.

Spring and autumn hike around the Radenci Plain
The area of the Radenci Plain is a natural and cultural gem, and its biodiversity is a consequence of a thousand-year interaction between nature and men. The plain stretches across more than four square kilometres at an altitude of 325 metres and is the smallest of nine distinct karst plains in Slovenia. The plain is surrounded by steep forest slopes all around, except for its north-western edge, which opens towards the Grosuplje Basin with a flat stretch. In the middle of the plain, there are two hills, the Boštanj Hill in the north and a solitary hill called Kopanj in the south, which is the most beautiful sample of a solitary hill in the Dinaric karst plains in Slovenia (Lampič and Smrekar, 1998, Topole 1998, Florjanc and Jernejc-Babič 1999). In 2012, the wider area of the Radenci Plain was declared a landscape park.

'Boys coming along the field' event
The traditional performance of Zarja folk singers with guests from Slovenia and abroad in Velika Račna. The event takes place in autumn.

Easter Fair in Boštanj
At the Easter Fair, the visitors can see the exhibition of Easter dishes, making of clay products, baskets, toothpicks and wood shavings, display of sharpening scythes, making of Palm Sunday bundles etc. Gourmets will also be taken care of by the tasting of Easter ham and other meat products, and Easter pastry.

A view from Mala and Velika Ilova Gora
In addition to excellent terrains for mushroom picking and walks in all seasons, you can also enjoy the view of the Radenci Plain with Kopanj over Grosuplje past Krim towards the Alps if the weather is fine. And if you're lucky, you may recognise the outlines of Triglav.