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Routes
Hiking trails & Routes
Austria
Lower Austria
Weinviertel
Hollabrunn
Hardegg

Kaja Trail

Easy

5.0

(3)

6

hikers

Kaja Trail

00:19

1.19km

10m

Hiking

Enjoy an easy 0.7-mile hike on the Kajaweg in Thayatal National Park, exploring shady forests and historic Kaja Castle ruins.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Nationalpark Thayatal

Waypoints

A

Start point

Parking

Get Directions

1

260 m

Kaja Castle Ruins

Highlight • Castle

Relatively well-preserved castle ruins. Definitely worth a detour if you are hiking through the Kajatal from the Thaya up towards Merkersdorf. It is not always open though.

Translated by Google •

Tip by

2

413 m

Kajabach Valley

Highlight (Segment) • Gorge

This trail leads into the wild and romantic Kajabachtal around the ruin Kaja. In spring colorful spring flowers line the brook, in summer the canyon covered with ferns and mosses …

Translated by Google •

Tip by

3

834 m

Cross the bridge to Kaja Fortress.

Translated by Google •

Tip by

B

1.19 km

End point

Parking

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Way Types & Surfaces

Way Types

499 m

372 m

260 m

< 100 m

Surfaces

673 m

143 m

< 100 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

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Weather

Powered by Foreca

Sunday 10 May

21°C

12°C

60 %

Additional weather tips

Max wind speed: 18.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where does the Kajaweg trail start and where can I park?

The Kajaweg typically starts near Merkersdorf, a community of Hardegg. You can usually find parking at the Kaja Castle ruins, which is also the starting point for the trail.

Is the Kajaweg trail dog-friendly?

Yes, dogs are allowed on the Kajaweg. However, as it is within the Thayatal National Park, you must keep your dog on a leash at all times to protect the local wildlife and ensure a pleasant experience for everyone.

What is the best time of year to hike the Kajaweg?

The Kajaweg is pleasant year-round, but it's particularly enjoyable during warmer months. It's a shady walk, making it comfortable even on hot summer days. The Kaja Castle Ruins are typically open on weekends from May to October, which might influence your visit if you wish to explore them.

Are there any permits or entrance fees required for the Thayatal National Park?

No, there are no specific permits or entrance fees required to hike the Kajaweg or enter Thayatal National Park. However, general national park regulations apply, such as staying on marked paths and keeping dogs on a leash.

Is the Kajaweg suitable for beginners or families?

Absolutely! The Kajaweg is considered an easy trail, making it well-suited for beginners, families, and hikers of all skill levels. It's a short, scenic loop that offers a tranquil walk through nature and history.

How long does it typically take to complete the Kajaweg?

The Kajaweg is approximately 1.1 km (0.7 miles) long. While the walking time is estimated to be around 20 minutes, factoring in stops for observation and visiting the Kaja Castle Ruins, it can extend to 30-45 minutes.

What notable sights will I see along the Kajaweg?

Along the route, you'll encounter several interesting features. You'll loop around the 800-year-old Kaja Castle Ruins, from where you can enjoy views of the Kajabach Valley. You'll also pass the Kajahöhle (Kaja Cave) and cross the Kirchtalbach multiple times, including over a charming Wooden Bridge Over the Stream in Thayatal National Park.

What is the terrain like on the Kajaweg?

The terrain on the Kajaweg is generally accessible and easy. You'll walk through shady forests, alongside the Kirchtalbach and Kajabach streams, and past lush meadows. The path is well-maintained, making for a comfortable hike.

What are the specific rules or natural features to be aware of in Thayatal National Park?

As part of a national park, the area emphasizes natural processes. You'll notice fallen dead trees that are only removed if they block official paths, contributing to the wilderness feel. The clean waters of the Kajabach stream are home to rare European noble crayfish, a protected species, so it's strictly prohibited to enter the stream to protect these animals. Always stay on designated paths.

Does the Kajaweg intersect other well-known paths?

Yes, the route also passes through sections of the European long distance path E8 - part Austria, the Merkersdorfer Rundwanderweg, the NÖ Landesrundwanderweg, the Ostösterreichischer Grenzlandweg 07, and the Thayatalwanderweg 630.

Are there any opportunities for cooling off or accessing water along the trail?

Yes, there is an official access point to the Kirchtalbach stream where you can cool your feet or float small rafts. This is a great spot to refresh yourself, especially on a warm day.

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