The Momin Prohod – Vetren route is a stage of the Sultans Trail, an international long-distance hiking route from Vienna to Istanbul, on its Sofia – Plovdiv – Edirne section. It is about 24 km long and crosses the Trajan’s Gate pass.
It starts in the spa town of Momin Prohod in Kostenets municipality and, via the Kaleto area and the Trajan’s Gate pass, descends to the town of Vetren in Septemvri municipality. The route runs mostly on farm and forest roads, with paved stretches in the villages and towns.
Trajan’s Gate is the ancient Succi pass on the Roman road that linked Central Europe with Constantinople. The modern name comes from wrongly crediting the Roman fortress in the pass to Emperor Trajan — it is later. Vetren lies at the exit of the pass; in antiquity the settlement was known as Bona Mansio. Momin Prohod has been a spa resort of national importance since 1950, and its mineral springs were already used by the Romans.
About 24 km one way — the stage takes a full day. There are no technical sections, but it is long, so carry water and food for the day and the route’s GPS track.
Momin Prohod is about 70 km from Sofia. The route is one-way, so plan your return from Vetren in advance.
Pazardzhik region
13.9 km away

Sofia region
17.7 km away
Momin Prohod – Vetren is located in Pazardzhik, Bulgaria.
Momin Prohod – Vetren 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.
Momin Prohod – Vetren 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.