We rate this trip as moderate, with 1 strenuous day. Most days include 3-5 hours of walking or hiking, averaging 1100 feet of elevation per day. The exception to this is one day of trekking into Triglav National Park. You will cover 9.5 miles and gain 4200 feet of elevation. You should be capable of hiking 7 hours over some rocky trails and steep ascents and descents. You should be capable of hiking at up to 7000 feet above sea level.