The Alpe Adria Trail is not technically difficult (no mountaineering skills necessary) but it does require a good fitness level. There are at least six hours of hiking each day, so your endurance should be up to this standard. To prepare, we recommend doing cardio, such as slower, long-distance runs, and going on shorter hikes with your backpack and hiking boots on. To fully enjoy the trip, you should be able to hike between five to eight hours, with your pack, without much huffing and puffing.