The central climbing areas of the Karst edge are:
- Osp: 267 climbing routes graded 3 to 9a,
- Črni Kal: 287 climbing routes graded 3 to 8a, and
- Mišja peč: 203 climbing routes graded 4a/a+ to 9a+/b.
Koper also offers the largest bouldering centre in Slovenia (https://www.plus-climbing.com/sl).