Started alone at 5am from Arthurhaus with 2 liters of water and food for the entire day. Climbed to the Hochkönig summit and refilled the soft flasks in the refuge on the summit. The climb to the summit starts relatively easy and becomes more technical 3 km before the summit. If the weather is good, it is possible to climb to the summit within 2..3 hours. The way down from the summit to Hinterthal is much more technical and becomes very difficult if it is raining or snowing. There are multiple places requiring scrambling and going down using via-ferratas, which make the way down significantly slower especially in difficult weather conditions. In Hinterthal, I have refilled the soft flasks and continued back to Arthurhaus via lower trails on the slopes of Hochkönig, which are relatively easy rolling hills. During the last 10 km, I have passed via two more refuges, filled water flasks and finally returned to Arthurhaus at 6pm.