4.8
(8)
40
hikers
05:09
19.6km
170m
Hiking
Hike the challenging 12.2-mile O Grobe – Black Stones Route, gaining 559 feet with coastal views and unique rock formations.
Last updated: February 26, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Complexo intermareal Umia - O Grove, A Lanzada, Punta Carreirón e Lagoa Bodeira
ZEC Complexo Ons - O Grove
Waypoints
Start point
Parking
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609 m
Highlight • Beach
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Tip by
2.87 km
Highlight • Summit
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Tip by
7.87 km
Highlight • Beach
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Tip by
9.07 km
Highlight • Natural Monument
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Tip by
9.76 km
Highlight • Natural
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Tip by
11.7 km
Highlight • Monument
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Tip by
13.1 km
Highlight • Trail
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Tip by
19.6 km
End point
Parking
Way Types & Surfaces
Way Types
10.7 km
5.18 km
1.90 km
1.56 km
238 m
Surfaces
7.13 km
3.98 km
3.70 km
2.73 km
2.04 km
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Elevation
Highest point (100 m)
Lowest point (0 m)
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Weather
Powered by Foreca
Saturday 9 May
17°C
11°C
68 %
Additional weather tips
Max wind speed: 26.0 km/h
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This route was planned by komoot.
Specific parking information for the O Grobe – Black Stones Route is not detailed, but generally, trails in popular coastal areas like O Grove often have designated parking lots near major access points or beaches. It's advisable to check local signage upon arrival or use navigation apps to locate suitable parking near the starting point of the route.
Given its 'difficult' rating and coastal location, you can expect varied and challenging terrain. This may include rocky sections, uneven paths, and potentially narrow passages, similar to descriptions of other 'Blackstone' trails that feature rocky cliffs and well-worn, challenging paths. The route covers nearly 20 km, so be prepared for a long day on your feet.
The route offers several notable highlights. You'll pass by the beautiful Dunes of A Lanzada, enjoy views from Monte Siradella, and discover the scenic Praia do Barreiriño. Other unique features include the O Carreiro Rock Formations, the natural area of Con Negro, and the historical O Grove Coastal Military Battery. A significant portion of the route also follows the Ruta das Pedras Negras.
With a 'difficult' rating and a distance of nearly 20 km, this route is generally not recommended for beginners or families with young children. The challenging terrain and significant duration require a good level of fitness and hiking experience. Consider shorter, easier trails in the O Grove area if you're looking for a more family-friendly option.
Coastal trails like this one are often best enjoyed during the spring and autumn months when the weather is milder and more predictable. Summer can be very pleasant, but also busier and potentially hotter. Winter hikes might offer unique views, especially of ice-coated rocks if temperatures drop, but can also bring muddy or icy conditions on challenging sections.
While specific regulations for this exact route regarding dogs are not available, many trails in natural areas allow dogs, often requiring them to be on a leash. Given the route's length and potential for wildlife, keeping your dog leashed is always a good practice. Please check local signage at the trailhead for any specific restrictions within the Complejo Intermareal Umia-O Grove.
The O Grobe – Black Stones Route is located within the Complejo Intermareal Umia-O Grove. Generally, natural parks and protected areas in Spain do not require an entrance fee for hiking, but specific activities or access to certain zones might. It's unlikely you'll need a permit for a standard day hike, but always check the official website for the Complejo Intermareal Umia-O Grove for the most up-to-date regulations before your visit.
Yes, the route incorporates sections of several other official trails. You will find yourself on parts of the Ruta do Con Negro, Ruta do Adro Vello, Sendeiro de Pedras Negras, and the PR-G 116, among others. This integration allows for a diverse hiking experience, connecting various local paths.
For a difficult, nearly 20 km hike, sturdy hiking boots with good ankle support are essential, especially given the potentially rocky and uneven terrain. Dress in layers suitable for coastal weather, which can change quickly. Bring plenty of water, snacks, sun protection (hat, sunscreen), a first-aid kit, and a fully charged phone. A map or GPS device (like komoot) is also highly recommended for navigation.
As the route is located in a coastal and intertidal complex, you might encounter various bird species, especially seabirds and waders. Keep an eye out for marine life in tide pools if you're near the beaches. While specific large wildlife sightings are not guaranteed, the natural environment offers opportunities for observing local flora and fauna.