Source of Kupa (without source)

Not worth it unless you want to train endurance uphill.
The first part is a paved road you mostly go downhill, and the second part is almost entirely gravel, not very demanding but around an hour constant uphill. The scenery is mostly same all the time, soft shade, woods. You do go nearby entrance of the path toward source of Kupa, but they will not allow you to go in with bike, and honestly you would be carrying the bike most of the time. If you want to visit the source, go by foot, roughly half an hour walk down, and same up. From the point of entrance, if you continue by bike down the pawed road, there is one point where you could cross the bridge and on the other side it seems to be a gravel road, but again they do not allow bikes (although local cars are allowed).