The section of the Sultan’s trail going south from Sofia towards the Greek border is particularly demanding both physically and in terms of supportive infrastructure.
Physically, the trail passes through the Rila Mountain range and National Park and then on to the densely forested Western Rhodopes range and, finally, the Eastern Rhodopes. Individual stages, in addition to their point-to-point demands, may also include rises and falls in excess of a 1000m.
Accommodation in the mountains is structured around a series of “Mountain Huts”…essentially high-altitude albergues or hostels…whose size, facilities, quality and ability to be contacted (for bookings, etc.) vary considerably. Many small towns and villages adjacent to the route can offer B&B and other facilities but, again, what and where is similarly vague.
Transport is also problematic…bus and train connections are infrequent, few and far between, even for some of the larger towns, and roads are often narrow, steep and winding.
Not recommended for inexperienced hikers or any lacking confidence and planning; and not recommended for any during inclement weather or the possibility thereof.