Polkovnik Serafimovo – Srednogortsi is stage ST521 of the Sultans Trail, the international hiking route from Vienna to Istanbul. It is about 17.7 km long and crosses the Central Rhodopes between Smolyan and Madan.
The stage starts in Polkovnik Serafimovo at about 890 m, climbs to about 1,240 m, passes through Rustan village and descends to Srednogortsi at about 630 m.
Polkovnik Serafimovo, called Alami Dere until 1934, is named after Colonel Vladimir Serafimov, a hero of the Balkan War. In the village centre is a memorial to fallen local men and the 21st regiment, and on nearby Srednogorets peak stands the Rhodope Shipka memorial. Srednogortsi lies where the Cherna river flows into the Arda.
About 17.7 km, with a climb to about 1,240 m and a descent towards the Arda – a full-day stage. Carry water, food and the route's GPS track.
Polkovnik Serafimovo is about 10 km from Smolyan and 2 km south of the Smolyan – Rudozem road. Srednogortsi is in Madan municipality. The route is one-way, so plan your return in advance.
Smolyan region
4.9 km away
Smolyan region
6.5 km away
Smolyan region
7.4 km away
Smolyan region
8.4 km away
Polkovnik Serafimovo – Srednogortsi is located in Smolyan, Bulgaria.
Polkovnik Serafimovo – Srednogortsi is most easily reached by car. Use the coordinates above to navigate, or open the location in OpenStreetMap or your preferred maps app for turn-by-turn directions. Public transport options vary by region — for remote destinations a rental car gives the most flexibility.
Polkovnik Serafimovo – Srednogortsi is best walked from May through October, when the trail is clear of snow and weather is generally stable. Summer middays can be hot at lower altitudes — start early. Winter walking requires proper gear and route knowledge.
Suitability depends on the specific route. Bulgarian trails range from paved family-friendly paths to multi-day high-mountain crossings. Check the length, elevation gain, and surface before setting off. Sturdy footwear, water, and a basic map (offline or paper) are essential even on short walks.
