4.2
(91)
495
hikers
44
hikes
Hiking around Effry offers a variety of trails exploring local natural and man-made features. The region is characterized by water bodies, such as the Étang de Blangy, and notable landmarks like the Cascade de Blangy and the Blangy Viaduct. These elements contribute to a landscape that combines natural beauty with points of interest. The terrain generally features gentle elevation changes, making it accessible for various hiking abilities.
Last updated: June 26, 2026
4.1
(25)
106
hikers
10.6km
02:52
130m
130m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(4)
21
hikers
7.76km
02:02
60m
60m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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4.5
(2)
11
hikers
10.8km
02:52
110m
110m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4
hikers
7.10km
01:54
80m
80m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.0
(3)
12
hikers
9.21km
02:23
50m
50m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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FYI: The Komoot hiking trail incorrectly indicates you can cross the river here. Just to clarify, the crossing is broken.
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The Ohis railway viaduct was built around 1885, then destroyed during the First World War and rebuilt just after. 27 meters high and 187 meters long, it has 13 arches. The Busigny-Hirson line, which was completely closed in 1978, used to run through it.
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The Cascade de Blangy is a beautiful waterfall located in the Forêt Communale de Hirson in Aisne, France. It is a popular place for hiking and nature lovers, especially in spring when the waterfall is at its most beautiful.
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Le viaduc ferroviaire de OHIS. It is a railway viaduct located in Ohis, a village in the Aisne department, a few kilometers east of Guise 23. The viaduct is an architectural masterpiece and is one of the highest railway viaducts in France. The viaduct was built in 1870 and has a height of 50 meters and a length of 300 meters. The viaduct is still in use and is part of the railway line between Laon and Hirson.
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Very nice POI, thanks to the creator.
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Effry offers a diverse selection of nearly 40 hiking routes. These range from easy strolls to more challenging treks, ensuring there's something for every hiker.
Yes, Effry is very welcoming for beginners and families. About half of the trails, around 19 routes, are classified as easy. A great option is the Blangy Viaduct – Étang de Blangy loop from Cascade de Blangy, which is just under 2 miles (3 km) and takes about 45 minutes, offering gentle terrain and scenic views.
Absolutely! The region is known for its beautiful water features. The Cascade de Blangy – Étang de Blangy loop from Cascade de Blangy is an excellent choice, providing a circular journey around the pond and the picturesque Cascade de Blangy.
Yes, Effry's trails often combine natural beauty with historical points of interest. You can explore the impressive Ohis Railway Viaduct, or discover the Old railroad. The Blangy Viaduct – Étang de Blangy loop specifically highlights the historic viaduct.
Many of the trails in Effry are designed as loops, making them convenient for hikers. Popular circular routes include the Étang de Blangy – Cascade de Blangy loop from Hirson and the Cascade de Blangy – Étang de Blangy loop from Cascade de Blangy.
Generally, the natural trails around Effry are suitable for dogs. However, it's always recommended to keep your dog on a leash, especially near wildlife or in agricultural areas, and to check for any specific local regulations on individual routes or protected areas.
The region around Effry is enjoyable for hiking throughout much of the year. Spring and autumn offer pleasant temperatures and beautiful scenery with blooming flowers or vibrant foliage. Summer is also popular, especially around the water bodies, while winter hikes can provide a peaceful, serene experience, though some paths might be muddy or icy.
The hiking trails in Effry are highly regarded by the komoot community, boasting an average rating of 4.3 out of 5 stars from over 90 reviews. Hikers often praise the serene ponds, cascading waterfalls, and the blend of natural beauty with historical structures like the Blangy Viaduct.
While many routes are shorter, there are options for longer walks. For example, the Cascade de Blangy – Étang de Blangy loop from Cascade de Blangy covers over 8.7 miles (14 km) and is classified as moderate, offering a more extended exploration of the area's features.
While the main attractions like Étang de Blangy and Cascade de Blangy are popular for good reason, exploring some of the lesser-trafficked paths can reveal quieter spots. Look for routes that venture slightly away from the main water features, or consider the Cascade de Blangy – View of Blangy loop from Hirson for a different perspective of the area.
Parking availability varies by trailhead. For popular spots like the Cascade de Blangy or Étang de Blangy, you can often find designated parking areas nearby. It's advisable to check the starting point details on individual komoot tour pages for specific parking information before you head out.


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