GeoKarst: Exploring the Karst-Carso cross-border geopark with electric bicycles

LOCATION: Sežana (SLO) – Villa Opicina / Opčine (ITA)

TIME: 8:30 (Saturday, 14.5.2022) from the Slovenian side or 9:00 from the Italian side

PRICE: Free guidance (event within the GeoKarst project, co-financed by the Interreg V-A Italy-Slovenia Cooperation 2014-2020 Programme). Possibility of renting an e-bike (35 EUR).

ASSEMBLY POINT: for the group that starts the cross-border cycling tour in Sežana, the assembly point is at the parking lot at the cemetery at 8:30; and for the group that starts the cross-border cycling tour in Opčine, at the parking lot east of the large roundabout at 9:00.



Explore the unique cross-border Karst area – the Karst-Carso Geopark – on an electric bike with experienced local natural sciences and/or cycling guides. Discover extraordinary geological karst phenomena and construction sites dating back thousands of years. Enjoy the cross-border views and authentic Karst delicacies. Keep plenty of water on hand while we take care of the lunches.

After learning about the formation of the Karst at the Karst Vegetation Interpretation Centre, we will travel to Tabor hill, where the remains of a thousand-year-old construction site still stand today. The trail will take us to a geologically significant point as well as the Medvejk hill, which offers spectacular cross-border views. We will be served local delicacies in a family inn with a long tradition. You can continue on to the Italian side, where we will visit the Rebentabor Camp, the geological point of the Aeolians at Col (Repentabor walls), the Prčendol valley, and the extraordinary living stone in the surrounding area. We will continue our path to the Obelisk near Opčine, where there is a beautiful view of the Trieste bay and an interesting geological transition indicating a drastic change in the Setimentation Paleo-environment.

Cyclists starting from the Italian side in the morning will cycle the same route in reverse order, with the groups meeting twice in between.



  • Karst Vegetation Interpretation Centre
  • Gradišče Tabor
  • Geological point on the Vrhoveljska road
  • Medvejk hill
  • Camp above Col
  • Repentabor Walls
  • Prčendol and living stone
  • Obelisk and geological landmark



Route length: 17 km (Slovenian side) and 19 km (Italian side)

Total ascent: approx. 358 amsl (Slovenian side) + approx. 360 amsl (Italian side)

Duration: approx. 3 hours for the Slovenian Karst side and approx. 3 hours for the Italian Karst side, total approx. 6-7 hours

Surface: hardened macadam, asphalt, monorails/hiking trails

Difficulty: 2/5 (well-conditioned cyclists)


EQUIPMENT: Technically flawless trekking or mountain electric bike with profiled tyres and front suspension, cycling helmet (mandatory!), spare tube, suitable clothing, sufficient amount of drinks and food.


APPLICATIONS and INFORMATION: The organizers of the event are TIC Sežana-ORA Karst and Brkinov d.o.o., Municipality of Sežana and Geological Service of the Autonomous Region of Friuli Venezia Giulia. A licenced and experienced cycling guide will lead the tour through the Slovenian Karst, and a licenced and experienced nature guide will lead the tour through the Italian side. The number of participants is limited, applications are mandatory, and we accept applications until the places are filled at TIC Sežana – For more information, call 00386 41 611 980 (Ana). For information on the Italian side of the tour, please call +39 340.5569374 or write to

By registering, the participant confirms that he/she is aware of the complexity of the tour and meets the health, physical and technical conditions for safe participation. The participant drives at his/her own risk and is obliged to follow the instructions and decisions of the tour guide. In case of bad weather, the tour will be postponed, and all applicants will be informed.