Getting there

Begin the hike at Gifu Park. This can be accessed by either car or by bus from Gifu station. From Gifu park look out for signs pointing to hiking trails. Here you should find a selection of hiking trails. The easiest is Nanamagari, the most difficult is Uma no Se. 

Maps

Google Maps innit mate. 

Route/Trail notes

The hike to the summit from the Nanamagari trailhead is very straightforward. Follow signs to the summit. The path is mostly concreted and has a stair case. Once nearing the summit, follow signs for the observation deck and then follow signs to the castle. On the way back down, next to the ropeway look for signs that say hyakumagari. This will take you back to Gifu park but on a different route. Coming down this route is much easier than going up. I reccommend it as it is more quiet and greater chance of seeing wildlife. 

After the hike I recommend also checking out the Daibutsu (large Buddha). There is a temple across from the park which houses the Buddha. 

Note: it is also possible to get to peak of Kinkazan via ropeway.