ST605 Üsküpdere - Pinarhisar

The ST605 Üsküpdere – Pınarhisar is a point-to-point day stage of the 2,500 km Sultans Trail in Turkey's Kırklareli Province, set in the Thracian foothills of the Yıldız (Istranca) Mountains. Climbing roughly 350 m across forested ridges and open farmland, it is rated expert for its long unmarked sections, route-finding demands and exposed forest tracks rather than for technical scrambling.

About the ST605 Üsküpdere - Pinarhisar

The ST605 is one stage in the Sultans Trail, a 2,500-kilometre cultural walking route that runs from St. Stephen's Cathedral in Vienna to the Süleymaniye Mosque in Istanbul, crossing nine countries: Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Greece and Turkey. The trail is named after Sultan Süleyman Kanuni (Suleiman the Magnificent) and broadly follows the line of his 1529 campaign march on Vienna, a 141-day journey that began in Istanbul on 10 May 1529. The modern route was developed by volunteers of the Netherlands-based NGO Sultans Trail – A European Cultural Route, and parts of it overlap the E8 European long-distance path.

This particular stage sits deep in the Turkish section, within Kırklareli Province in eastern Thrace. It links the small forest village of Üsküpdere with the market town of Pınarhisar, which lies at the southern foot of the Yıldız Mountains. As an International Walking Network (IWN) route, the Sultans Trail is registered among the world's most significant long-distance paths, and the ST605 carries that designation through some of the quietest countryside in European Turkey. Walkers pass through oak and beech forest, cross small streams and follow farm tracks between Thracian villages where tourism is almost non-existent and Turkish is the only working language.

Because the stage is rated expert, the challenge is navigational rather than physical. Waymarking on the Turkish section is intermittent, mobile signal drops out under forest canopy, and several junctions are unsigned forestry roads that look identical. A GPX track, a charged phone with offline maps and a paper backup are essential. The reward is genuine solitude: on most days you will see foresters, shepherds and farmers but few, if any, other hikers.

The cultural weight of the Sultans Trail is part of its appeal. Where this single forest stage feels remote and ordinary, it is one link in a 2,500 km thread that once carried a 141-day imperial campaign and now functions, in the trail organisation's own words, as “a path of peace and a meeting place for people of all faiths and cultures.” Walking from Üsküpdere to Pınarhisar, you tread the final Turkish approaches toward Istanbul that Süleyman's army crossed in reverse nearly five centuries ago. Kırklareli Province itself has been a crossroads of Thracian, Roman, Byzantine and Ottoman settlement, and that layered history shows in the village fountains, ruined fortresses and old caravan springs you pass along the way. Few day stages anywhere combine such deep history with such complete quiet.

Route Overview & Stages

The ST605 is best understood as one link in the chain of Turkish stages that carry the Sultans Trail from the Greek border at Kastanies down to Istanbul. The table below places the Üsküpdere – Pınarhisar stage in context with its neighbours. Distances are approximate and based on the Sultans Trail's published Turkish itinerary; confirm exact figures against the official GPX before you set out.

The Üsküpdere – Pınarhisar leg is a comfortable single day for a fit walker, typically taking 6 to 8 hours including breaks. The terrain undulates between roughly 200 m and 550 m above sea level, with no sustained climbs but plenty of short, steep pitches on forestry roads. Carrying 2.5 to 3 litres of water is wise, as reliable taps appear only at the two villages.

Highlights & Points of Interest

• Üsküpdere village — a quiet Kırklareli settlement on the forest edge and the stage's western trailhead, with a small mosque, a tea house and a spring where you can top up water before entering the woods.
• Yıldız (Istranca) Mountain forests — the dense oak, beech and hornbeam woodland that blankets the ridge between the two villages, part of one of the largest contiguous deciduous forests in European Turkey.
• Pınarhisar Caves (Kovuk Kaya) — karstic rock formations and caverns on the limestone slopes above Pınarhisar, long associated with local legend and worth a short detour at the stage's end.
• Pınarhisar Castle remains — fragments of a Byzantine-era fortress that gave the town its name (“spring fortress”), overlooking the plain toward Istanbul.
• Thracian spring sources — numerous cold-water springs along the route, several of them stone-built and centuries old, that historically watered caravans and flocks crossing the same hills.
• Forest ridge viewpoints — open clearings on the high ground that, on clear days, reveal the patchwork of Thracian farmland rolling south toward the Sea of Marmara.
• Village mosques and fountains — Ottoman-era stone fountains (çeşme) in both Üsküpdere and Pınarhisar, modest but characterful reminders of the route's heritage.
• Wildflower meadows — the forest clearings burst with orchids, poppies and crocuses in April and May, one of the most photogenic windows on the whole Turkish section.

Best Time to Hike the ST605 Üsküpdere - Pinarhisar

The single best month to walk this stage is May. By then the Thracian winter mud has dried, daytime temperatures sit comfortably between 16°C and 24°C, the forest is in full leaf and the meadows are at peak bloom. As of 2026, late spring also brings the longest dry-weather windows of the year before the summer heat arrives, making navigation through the unsigned forest sections far easier on firm ground.

April is a strong second choice, greener still but wetter, with forestry roads that can turn to sticky mud after rain. September and October form an excellent autumn alternative: stable, mild weather, clear air for the ridge views and quiet trails, though daylight shortens quickly through October. Summer (June to August) is walkable but the open farmland sections become hot and shadeless, with afternoon temperatures regularly exceeding 30°C; an early start is essential if you go then. Winter (December to February) is best avoided—short days, cold rain, occasional snow on the Yıldız ridge and waterlogged tracks make an already expert-rated navigation challenge harder still.

Practical Information

Accommodation

This is rural Thrace, so options are limited and bookings are best made by phone in Turkish. Pınarhisar has a small number of modest guesthouses and town hotels, typically €20–€35 per night for a double room. For more choice, base yourself in Kırklareli (about 25 km away), where mid-range hotels run €30–€50 a night and a few budget pensions sit below €25. Üsküpdere itself has no formal accommodation; wild camping is tolerated discreetly in the forest, but always ask permission if pitching near a village, and budget €0 for camping plus the cost of carrying everything in. There are no staffed mountain huts on this section—it is a village-to-village walk, not an alpine one.

Getting There & Back

The nearest airport is Istanbul Airport (IST), roughly 2.5 to 3 hours by road from Kırklareli. From Istanbul's Esenler bus terminal, regular intercity coaches reach Kırklareli in about 3 hours; from Kırklareli, local minibuses (dolmuş) connect to both Üsküpdere and Pınarhisar in 30–45 minutes, though services thin out after mid-afternoon, so check return times before you start. There is no passenger rail to the trailheads. The simplest logistics are to sleep in Kırklareli, take an early minibus to Üsküpdere, walk to Pınarhisar, and catch a late-afternoon minibus back. For timetables and intercity options, consult the Republic of Türkiye's official tourism portal, goturkiye.com.

Permits & Fees

No permit is required to walk the ST605, and there is no entry fee—the Sultans Trail is free and open to all. The route crosses state forest managed by Türkiye's General Directorate of Forestry; open fires are prohibited, and you should carry out all waste. For the official route description, GPX files and the latest on-the-ground conditions, the trail authority's own site is the definitive source: sultanstrail.com.

Gear & Packing List

Because the ST605 is a navigation-heavy day stage with long forest stretches and no resupply between villages, pack as you would for a self-sufficient day in remote countryside. A comfortable, well-ventilated daypack or small trekking pack is ideal—something in the 35–45 litre range like the Abisko Hike 35 handles a day's water, food and layers with room to spare. If you plan to camp wild and carry a tent, a larger ultralight load-hauler such as the 2400 Windrider or, for bigger kit, the 3400 Windrider keeps weight down on the climbs. Fast-and-light day walkers who prefer a running vest could opt for the ADV Skin 12.

Beyond the pack, prioritise: 2.5–3 L water capacity, a fully offline GPX navigation setup with paper backup, a power bank, sturdy trail shoes or light boots, sun protection for the open farmland, and a windproof layer for exposed ridges. Forest ticks are present in spring and summer, so long trousers and a tick check at day's end are sensible. Plan your day's food and water around the effort—our guide on how many calories you need hiking a full day helps you pack enough fuel without overloading. If you are still choosing a pack, the field-tested rankings in Best Ultralight Backpacks of 2026 are a good starting point.

Similar Trails You Might Like

If the quiet, culturally rich character of the Sultans Trail appeals, Turkey offers an even more famous long-distance route to explore, and the wider Balkans deliver dramatic mountain alternatives. Hikers who enjoy a waymarked but wild experience should look at these:

• Likya Yolu — the celebrated Lycian Way along Turkey's turquoise southwest coast, far busier and more dramatic than the Thracian Sultans Trail but with the same blend of history, sea views and village hospitality.

For a contrast in scenery—high glacial valleys instead of rolling forest—our walkthrough of how to hike the Theth to Valbona trail in Albania covers one of the Balkans' finest single-day mountain crossings, a natural next step once you have a taste for southeast European trails.

Frequently Asked Questions

When is the best time to hike the ST605 Üsküpdere – Pınarhisar?
May is the standout month. The forest is in full leaf, meadows are flowering, daytime temperatures sit around 16–24°C and the dried-out tracks make the unsigned forest sections easier to navigate. April and the September–October window are good alternatives, while summer is hot on the open farmland and winter brings mud, cold rain and possible snow on the Yıldız ridge.

How difficult is this stage?
It is rated expert, but the difficulty is navigational rather than technical. There is no scrambling and the climbs are modest (around 350 m total), yet waymarking is patchy, mobile signal drops under forest canopy, and several junctions are unsigned forestry roads. You need a reliable offline GPX track, a paper map backup and confident route-finding to complete it safely.

How long does the Üsküpdere – Pınarhisar section take in a day?
The stage is roughly 20 km and takes a fit walker about 6 to 8 hours including breaks, making it a comfortable single day. Terrain undulates between about 200 m and 550 m with short, steep pitches but no sustained ascents. Start early to allow margin for navigation errors and to catch an afternoon minibus back from Pınarhisar.

Where can I stay along the route?
Pınarhisar has a few modest guesthouses and town hotels at roughly €20–€35 per night. For more choice, base yourself in Kırklareli (about 25 km away), where mid-range hotels run €30–€50. Üsküpdere has no formal lodging. Wild camping in the forest is tolerated discreetly, but ask permission near villages and carry all your own water and supplies.

Do I need a permit or pay a fee?
No. The Sultans Trail is free and open to everyone, and the ST605 requires no permit or entry ticket. The route crosses state forest, so open fires are banned and you must pack out all waste. For the official route description, downloadable GPX files and current trail conditions, check the Sultans Trail authority's website before you set off.