The starting point of MTB route is Hrvatska Kostajnica. In Hrvatska Kostajnica pass the bridge over Una river. Than pass the border and proceed on the Bosnian side of river Una. The paved road leads from Bosanska Kostajnica to Dobrljin and than to Bosanski Novi (Novi Grad) town. This is the fast section placed on the highway. In Bosanski Novi (Novi Grad) pass the bridge and return to the Croatian side of river Una. Proceed to Dvor na Uni. Keep straight in Dvor na Uni and than turn left on the labeled crossroad to Hrtić village. Ascend to the village and than pass the farm. Turn right on the paved road that leads to Zrin village. In Zrin village turn left and than keep straight to the ruins of Zrin fortfied town. The steep carriageway leads to the Zrin fortfied town that is situated on the hill. Return back to the last junction and than turn left and proceed on the carriageway along the forest. The ascent leads to the ridge of Zrinska Gora mountain. At the ridge keep the ride on the carriageway that leads to the east course. Due to many unlabeled junction use a GPS unit with uploaded route. Finally, the long carriageway section ends with the descent to Una river. Pass below the railway bridge and turn left on the paved road that leads straight back to Hrvatska Kostajnica. For more details check above interactive Map and below Gallery & Notes of the route.