We rate this trip as strenuous. You should be an experienced hiker in good physical condition. You should be capable of walking -7-8 hours per day on good trails with some steep ascents and descents, averaging 2500-3000 vertical feet per day at an elevation just over 9000 feet above sea level. Sure-footedness is important, and a history of severe vertigo may impact your ability to do this tour.
We cross two of the most spectacular and challenging hiking passes in the Swiss Alps—the Sefinenfurgge and the Hohtürli. On these passes, there are long staircases, scree slopes, some exposed drop-offs protected by cables or handholds, and short ladder assists of about 2 meters. Please note that there are two days during this tour where the elevation gains could be between 3300 and 4600 vertical feet. Trekking poles are highly recommended on this tour.
Assume 2.5 miles/hour on the flat.
Assume 1200 feet of up per hour.
Assume 2000 feet of down per hour.