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Spain
Galicia
Pontevedra
Litoral
O Grove

O Grove Coastal Loop

Hard

4.8

(8)

40

hikers

O Grove Coastal Loop

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

A

Start point

Parking

Get Directions

1

609 m

Dunes of A Lanzada

Highlight • Beach

Sand dunes along the narrow stretch of Playa de Lanzada. The open landscape considered a great spot for kitesurfing

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2

2.87 km

Monte Siradella

Highlight • Summit

Located 200 m above sea level, Mount Siradella is the highest peak on the O Grove peninsula. It offers views of the Umia-O Grove Intertidal Complex, a wetland of international …

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Tip by

3

7.87 km

Praia do Barreiriño

Highlight • Beach

This lonely and wild beach does not usually attract many crowds in summer. Perfect for those looking for peace and tranquility.

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4

9.07 km

O Carreiro Rock Formations

Highlight • Natural Monument

This is a cool hiking route but can also be cycled, well marked. There are numerous beautiful rock shapes to discover, 🔝

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5

9.76 km

Con Negro

Highlight • Natural

Hiking trails are marked with green and red arrows or dots, you can walk or cycle

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6

11.7 km

O Grove Coastal Military Battery

Highlight • Monument

This military battery has such a strategic location that in the 1950s, in the midst of the Cold War, the United States recognized that it was one of the most effective defense systems in the world.

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Tip by

7

13.1 km

Ruta das Pedras Negras

Highlight • Trail

The rocks along the trail are completely spectacular.

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Tip by

B

19.6 km

End point

Parking

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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

Elevation

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

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.

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Frequently Asked Questions

Where can I park to access the O Grobe – Black Stones Route?

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.

What kind of terrain can I expect on this hike?

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.

What are the main points of interest along the route?

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.

Is the O Grobe – Black Stones Route suitable for beginners or families with young children?

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.

What is the best time of year to hike this route?

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.

Are dogs allowed on the O Grobe – Black Stones Route?

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.

Do I need any permits or pay an entrance fee for this area?

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.

Does the route intersect with other well-known paths?

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.

What should I wear and bring for this difficult hike?

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.

What wildlife might I encounter on the O Grobe – Black Stones Route?

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.

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