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WILK JURA ADVENTURE
TODAY AVAILABLE—/5 E-BIKES
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Hard
WJA-04

WATAHA

Three Eagles’ Nests castles. The longest loop. The whole Jura in a single day.

Distance
67.1 km
Elevation
↑ 580 m
Duration
3h 50min

From Olsztyn through Złoty Potok and Ostrężnik to the Jura’s two most famous castles — Bobolice and Mirów — and back through Żarki. The longest day out of all our trails.

Trail details

Shape
loop
Direction
clockwise
Start
WILK base · Olsztyn Jurajski · 50.7484 N · 19.2650 E
Elevation
↑ 580 m · ↓ 580 m
Altitude
280–410 m a.s.l.
Time with stops
7–8 h

Who it's for

For seasoned riders

67 kilometres, 580 m of climbing — the longest WILK loop. Roughly half is tarmac, plus 20 km of cycle paths; the rest is gravel and forest roads, with short sandy stretches. More tarmac than Grzbiet Strażnic, so it rolls smoothly — the gradients are gentle, no technical descents. The difficulty comes from the distance: it’s a full day in the saddle. Save it for last, once you have the other trails behind you and know how to manage the battery. The battery is the key. Ride economically — stay in **Eco** and **Tour** on the flat and on tarmac, save **Sport** and **Turbo** for the climbs up to the castles. On loose ground where you need to push the bike, use **Walk Assist** (press and hold the lower assist button — the motor pushes the bike along for you).

For castle hunters

Three castles of the Eagles’ Nests Trail on one loop — Olsztyn, Bobolice and Mirów — plus the ruins of Ostrężnik and two medieval watchtowers along the way. Rebuilt Bobolice can be toured inside, Mirów is a romantic ruin, and the rocky Grzęda Mirowsko-Bobolicka ridge runs between them.

In Tour mode, no stops — 3h 50min. With castle visits and a break in Żarki — plan 7–8 hours. Set off early.

Along the way

  1. km 0

    Olsztyn castle ruins

    The first of three castles. Start at the WILK base, this time heading straight east.

  2. km 2–8

    Sokole Góry and Zrębice

    Along the edge of Sokole Góry — the reserve itself is for walkers, not bikes — and on through Zrębice, familiar from Trop Wilka.

  3. km 12–18

    Siedlec and Złoty Potok

    The lowest point of the loop (280 m). Through Złoty Potok, right past the Raczyński palace and the manor where Zygmunt Krasiński lived (now a museum). The full visit — trout farm, ponds, springs — is on Dolina Szeptów.

  4. km 22

    Ostrężnik castle

    Ruins of a 14th-century stronghold on a rock, about 200 m off the trail, with Ostrężnik Cave at its foot. Details on Grzbiet Strażnic.

  5. km 25–28

    Czatachowa and Przewodziszowice

    Uphill on forest roads — at km 28 the highest point of the loop (410 m), about 400 m from the Przewodziszowice watchtower.

  6. km 30–36

    Trzebniów, Moczydło, Niegowa

    The furthest point east. Quiet Jura villages, fields and limestone outcrops on the horizon.

  7. km 38

    Bobolice castle

    The second castle. Built in the mid-14th century on the orders of Casimir the Great, on a rock 360 m above sea level. A ruin for centuries — rebuilt from the ground up and opened to visitors in 2011. The trail runs right below its walls.

  8. km 38–40

    Grzęda Mirowsko-Bobolicka

    A rocky ridge of about 2 km linking the two castles — one of the most photographed views in the Jura. The trail follows its foot; the walking Eagles’ Nests Trail runs along the crest, among the Mirów Rocks and caves.

  9. km 40

    Mirów castle

    The third castle. Also from the days of Casimir the Great, extended by the Myszkowski family, abandoned in the 18th century. Today a secured ruin on a rock — since 2025 you can visit the inner courtyard with its galleries.

  10. km 48

    Żarki

    A small town with municipal rights since the 14th century. Market square and shops — the best place for a longer break and to stock up before the ride home.

  11. km 53–58

    Suliszowice and Krasawa

    Heading back west. About 450 m off the trail, the Suliszowice watchtower on its lone rock.

  12. km 60–66

    Zrębice, Przymiłowice

    The last villages before Olsztyn. Gentle descents, tarmac.

  13. km 67

    Back at base

    Olsztyn castle ruins in the afternoon light. The pack returns to base.

Surface

Tarmac33.6 km · 51%
Sealed7.25 km · 11%
Gravel7.18 km · 11%
Dirt6.87 km · 10%
Unsealed6.09 km · 9%
Packed gravel4.35 km · 7%
Sand0.89 km · 1%
Cobblestone0.27 km · 0%

Road types

Path24.8 km · 37%
Cycle path20 km · 30%
Street13.7 km · 20%
Minor road6.06 km · 9%
Singletrack2.08 km · 3%
Other0.39 km · 1%

Profile

A clockwise loop, 580 m of climbing spread over 67 km. Highest point: 410 m (forest near Przewodziszowice, km 28). Lowest: 280 m (Złoty Potok, km 16). Roughly half the route is tarmac, plus 20 km of cycle paths; the rest is gravel and forest roads. Gentle gradients — the difficulty comes from the length, not the technique.

What you'd miss from the saddle

On the trail

Olsztyn castle (km 0), Bobolice castle (km 38, interiors open to visitors), Grzęda Mirowsko-Bobolicka ridge (km 38–40), Mirów castle (km 40).

Right next door (short walks on foot)

Złoty Potok (km 16–18) — the Raczyński palace and the Krasiński museum; Ostrężnik castle and cave (km 22); the watchtowers at Przewodziszowice (km 28) and Suliszowice (km 54). Żarki (km 48) — market square, shops, the last place to stock up before the ride home.

Off the trail, but nearby

For a separate trip: walk the crest of the Grzęda Mirowsko-Bobolicka ridge — the Eagles’ Nests Trail between the two castles, with the Mirów Rocks and caves.

Route file

Checking access…

Trail available in season

2026

30 May – 31 Oct · 7 days a week

Free cancellation up to 7 days before departure

Weather · Olsztyn base
2°CCloudy · wind 12 km/h
su7°0°
mo8°2°1.2 mm
tu8°2°5.6 mm

Source: Open-Meteo · refreshed every 30 min

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