ST504 Belchin - Samokov

The ST504 Belchin–Samokov is a roughly 22-km point-to-point stage of the Sultans Trail in western Bulgaria, climbing about 600 m of elevation across the foothills between the Vitosha and Rila massifs. Rated expert, it links the spa village of Belchin with the historic ironworking town of Samokov along a 2,500-km cultural route that runs from Vienna to Istanbul.

About the ST504 Belchin - Samokov

The ST504 Belchin–Samokov is one numbered stage in the Sultans Trail, a 2,500-kilometre (1,600-mile) long-distance walking route that connects St. Stephen's Cathedral in Vienna with the Süleymaniye Mosque complex in Istanbul. The trail crosses nine countries — Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Greece and Turkey — and is maintained by the Netherlands-based Sultans Trail Foundation, a volunteer-driven cultural-route organisation. The path is named after Sultan Süleyman the Magnificent, whose 1529 campaign marched the same corridor over a 141-day journey toward Vienna.

This stage sits in the Bulgarian heart of the route, south of Sofia, where the trail threads between two of the country's most important mountain ranges. Belchin, the western trailhead, is a small village in Samokov Municipality known for its mineral springs and the restored Tsari Mali Grad hilltop fortress. Samokov, the eastern trailhead, is a historic town that once powered Bulgaria's iron and textile industries and today serves as the gateway to the Rila Mountains and the Borovets resort. As an International Walking Network (IWN) stage, ST504 carries the highest classification an OpenStreetMap walking relation can hold, marking it as part of a route of international significance.

Despite covering only a modest distance on paper, ST504 is rated expert. The grade reflects rough, lightly waymarked mountain terrain, exposure on the open foothills between the ranges, long gaps between resupply points, and the navigation skills the section demands rather than raw length. Hikers tackling it usually do so as part of a multi-day Bulgarian traverse rather than a stand-alone day walk.

What sets the Sultans Trail apart from a purely scenic route is its founding idea. The volunteers who developed it conceived the path as "a path of peace and a meeting place for people of all faiths and cultures," tracing a corridor that Ottoman, Orthodox, Catholic and Jewish communities have all shaped over five centuries. Walking ST504, you move through that layered history in microcosm: a late-antique Christian fortress above Belchin, an Ottoman mosque in Samokov, and a town whose icon-painting school produced religious art for monasteries across the Balkans. The route partly overlaps the E8 European long-distance path, so experienced trekkers often combine sections to build a continuous Bulgarian crossing.

Route Overview & Stages

The leg from Belchin to Samokov is best understood as three connected segments, each with its own character. The table below breaks down the approximate distances, climbing and key features along the way. Figures are estimates drawn from the surrounding terrain; verify the current GPX track with the foundation before setting out.

In the wider Sultans Trail sequence, ST504 follows the Sofia–Vitosha stages and precedes the legs that climb toward the Rila Monastery and on through the Rhodope Mountains via Velingrad and Smolyan before reaching the Greek border. The Bulgarian section as a whole strings together Sofia, Vitosha, Samokov, the Rila Monastery and Rila town — some of the country's most visited cultural landmarks.

Highlights & Points of Interest

• Tsari Mali Grad fortress — a restored late-antique and medieval citadel on a hill above Belchin, with reconstructed walls, an early Christian basilica and panoramic views over the valley.
• Belchin mineral springs — thermal waters that have made the village a small spa destination, ideal for soaking tired legs at either end of the stage.
• Vitosha massif — the rounded silhouette of Bulgaria's most famous mountain dominates the northern horizon for much of the walk.
• Shipochane village — a quiet rural waypoint where the trail dips from open ridge into sheltered beech forest.
• Iskar River valley — the trail descends toward the upper reaches of Bulgaria's longest internal river, which rises in nearby Rila.
• Bayrakli Mosque, Samokov — an Ottoman-era mosque with rare painted decoration, a direct nod to the trail's Süleyman-the-Magnificent theme.
• Samokov History Museum — housed in the former metropolitan building, it tells the story of the town's iron foundries and the famed Samokov art school of icon painting.
• Rila Mountains skyline — as you approach Samokov, the highest range in the Balkans, crowned by 2,925-m Musala, fills the southern view.

Best Time to Hike the ST504 Belchin - Samokov

The window for comfortable walking on ST504 runs from late May through early October. The foothills here sit between 750 and 1,100 m, so they hold snow and run wet with meltwater well into spring; trails can stay muddy and stream crossings high until mid-May. July and August bring the warmest, most stable conditions, with daytime highs around 25–30 °C in the valleys, though afternoon thunderstorms build over the Rila and Vitosha peaks and can arrive quickly.

The single best month is September. As of 2026, early autumn offers the most reliable balance for this stage — firm, dry tread, clear long-range views to Musala, comfortable daytime temperatures near 20–24 °C, fewer storms than midsummer, and the first colour in the beech woods around Shipochane. Nights cool sharply once you gain height, so pack for valley temperatures dropping toward 5 °C even in good weather. Winter ascents are for experienced parties only: the expert grade becomes genuinely alpine under snow, and the Bulgarian mountain sections of the Sultans Trail require tents and full winter kit.

If your plans are flexible, aim for a settled high-pressure spell in the first three weeks of September and start each day early to be off the exposed ridge sections before afternoon cloud builds. June is a strong second choice, with long daylight and green pastures, though lingering snowmelt can keep the upper streams running fast and the ground soft. Whichever month you pick, check the Bulgarian mountain weather forecast the evening before — conditions between Vitosha and Rila can change far faster than the lowland forecast for Sofia suggests.

Practical Information

Accommodation

Belchin and the neighbouring Belchin Bani spa cluster offer small guesthouses and family hotels, many with access to the mineral baths; expect roughly €30–55 for a double room. Samokov has a wider choice of hotels and guesthouses from about €25–50 a night, and the Borovets resort 10 km to the south adds dozens of larger hotels if you want a rest day. Along the trail itself there are no staffed mountain huts on this specific leg, so a tent gives useful flexibility — wild camping is broadly tolerated in Bulgaria's hills when done discreetly and away from villages. Budget around €10–15 a day for food if you self-cater from village shops; a sit-down meal in a Samokov mehana runs roughly €8–12.

Getting There & Back

The natural arrival airport is Sofia (SOF), about 60 km north. From Sofia's central bus station, regular regional buses reach Samokov in around 60–75 minutes; Belchin is served by less frequent local buses via the Samokov road, so many hikers reach the western trailhead by taxi or pre-arranged transfer (roughly 30 minutes from Samokov). There is no passenger railway to either trailhead today — the narrow-gauge line that once served Samokov is long closed — so road transport from Sofia is the practical option. Returning is the reverse: frequent buses link Samokov back to the capital throughout the day.

Permits & Fees

No permit or fee is required to walk ST504 — Bulgaria's mountains are freely accessible to walkers, and the Sultans Trail is a free, volunteer-maintained route. The only paid sites are optional cultural stops: entry to the Tsari Mali Grad fortress and the Samokov History Museum each costs a few euros. Always carry the current GPX track, as waymarking on this stage is intermittent.

Gear & Packing List

The expert grade, exposed foothill traverse and lack of huts on this leg make a self-sufficient, weather-ready kit essential. A pack in the 45–60 L range carries several days of food, a tent and warm layers without becoming unwieldy. The Arc Haul Ultra 60 is a strong ultralight choice for a multi-day Bulgarian traverse, while the Aether 65 offers a more supportive harness if you are carrying a heavier winter or shoulder-season load. For a lighter, faster single push between resupply points, a vest-style pack such as the ADV Skin 20 works well. Add a four-season-capable shelter, a sleeping bag rated to at least 0 °C for autumn nights, sturdy boots with good ankle support for rough tread, trekking poles, and a reliable GPS device loaded with the route. For dialling in your pack weight, our roundup of the best ultralight backpacks of 2026 compares seven tested packs, and you can plan your daily fuel with our guide to how many calories you need hiking a full day.

Similar Trails You Might Like

If the Bulgarian stages of the Sultans Trail appeal, several neighbouring long-distance routes share the same expert character and mountain scenery. The European long-distance paths cross the country and overlap the Sultans Trail in places, while the adjoining numbered ST stages let you build a longer continuous traverse toward the Serbian border. For a contrasting Balkan classic, our guide on how to hike the Theth to Valbona trail in Albania covers a shorter but spectacular alternative.

• Европейски пешеходен маршрут Е4, България
• European long distance path E8 - part Bulgaria
• ST424 Dimitrovgrad - Dragoman
• ST425 Dragoman - Slivnitsa
• ST426 Slivnitsa - Bankya

Frequently Asked Questions

When is the best time to hike the ST504 Belchin–Samokov?
The walkable season runs from late May to early October. September is the single best month: the tread is dry and firm, long-range views to the Rila peaks are clearest, daytime temperatures sit near 20–24 °C, and afternoon thunderstorms are far less frequent than in July and August. Pack for cold nights near 5 °C.

How difficult is the ST504 Belchin–Samokov?
It is rated expert. The grade reflects rough, lightly waymarked mountain terrain, exposure on the open foothills between Vitosha and Rila, long gaps between resupply, and the navigation skill required rather than sheer distance. You should be confident reading a GPS track, self-sufficient for food and shelter, and comfortable on uneven, sometimes steep ground.

How long is the stage and how far is that per day?
The leg is roughly 22 km with about 600 m of climbing, which most fit hikers complete in a single long day of seven to nine hours. Walked as part of a longer Sultans Trail traverse, it slots in as one comfortable daily stage, leaving time to visit the Tsari Mali Grad fortress and Samokov's museums.

Where can I sleep along the route?
There are no staffed mountain huts on this specific leg, so accommodation clusters at the trailheads. Belchin and Belchin Bani have spa guesthouses from around €30–55, and Samokov offers hotels and guesthouses from €25–50. Carrying a tent adds flexibility, as discreet wild camping is broadly tolerated in Bulgaria's hills away from villages.

Do I need a permit or pay a fee?
No permit or fee is needed to walk ST504. Bulgaria's mountains are freely accessible, and the Sultans Trail is a free, volunteer-maintained cultural route. The only paid stops are optional: entry to the Tsari Mali Grad fortress and the Samokov History Museum each costs a few euros. Always carry the current GPX track, as waymarking is intermittent.

For the official route, current GPX tracks and trail updates, see the Sultans Trail Foundation. To plan a side trip to one of Bulgaria's great cultural landmarks further along the route, the UNESCO listing for the Rila Monastery details its history and visiting information.