The Kočevski Rog covers the largest area of Slovenian virgin forest. The easiest way to explore it is taking a 64 km long Roška hiking trail. The trail is technically simple. You can choose whether you will walk the whole 64 km long journey, or just half of it, 33 km or 31 km challenge. The event is of non-competitive in any case, it's necessary to be well prepared and in good hiking condition.

More information available here.