I have walked the walk, in total the journey was 614 km long, the deviation to the north or south was +/- 7km (total 14.4km) total elevation 6573 meter, highest point 633 meter.
It took me 19 days, 18 nights, one slept outside all the others in hostel, hotels, and bed & breakfast.
The walk was sponsored by more than 70 people <3, the following on facebook where I posted twice a day was overwhelming.