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Hiking trails & Routes
Italy
Sardinia
Tàtari/Sassari

Granite Trail

Moderate

4.7

(20)

60

hikers

Granite Trail

02:57

11.2km

100m

Hiking

Hike a moderate 6.9-mile loop on Asinara Island, exploring the historic Fornelli Prison and scenic coastal views at Punta li Giorri.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parco Nazionale dell'Asinara

Waypoints

A

Start point

Ferry Terminal

Get Directions

1

3.79 km

Punta Li Giorri

Highlight • Beach

On the east coast of Asinara there are numerous small beaches including the splendid cove of Punta li Giorri surrounded by Mediterranean scrub and granite rocks.

Translated by Google •

Tip by

9.97 km

Public Water Fountain

Public Water Fountain

3

10.3 km

Fornelli Prison

Highlight • Historical Site

The Fornelli prison structure was built in the 1930s as a sanatorium for tuberculosis patients.
Over time it went from an agricultural colony to a maximum security prison in the …

Translated by Google •

Tip by

B

11.2 km

End point

Ferry Terminal

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Way Types & Surfaces

Way Types

4.40 km

3.98 km

2.74 km

Surfaces

4.77 km

4.01 km

2.18 km

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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

Wednesday 8 July

30°C

23°C

0 %

Additional weather tips

Max wind speed: 26.0 km/h

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Comments

June 27, 2023,Isola dell'Asinaro, Sardinien
The tour is very nice, good paths, e.g. T. scrambling over rocks. Several bathing bays. We saw several of the white donkeys. About 4 km you have to walk on asphalt.

Showing Translation

Today we are taking the boat from Stintino to Porto Fornelli on the Isola dell'Asinara. The boat seems to be at full capacity and we are already afraid of a "group hike". Surprisingly, we are the only ones setting off on foot and we meet exactly one couple on the way 😍
We are taking the "Sentiero del granito" and …

Showing Translation

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Frequently Asked Questions

How do I get to the trailhead and where can I park?

The trail is a loop on Asinara Island. Access to Asinara is typically via ferry from Porto Torres or Stintino. Once on the island, you'll likely start near Fornelli, which is a common entry point. Parking options on the island itself are limited, and often visitors rely on authorized transport services or bicycles to navigate. It's best to check with the park authority or your ferry provider for the most current access and transport details.

Is this trail dog-friendly?

Asinara is a National Park, and regulations regarding pets can be strict to protect the local wildlife. Generally, dogs are not permitted on the island's trails, or if allowed, they must be kept on a leash and restricted to specific areas. It's crucial to verify the latest rules with the Asinara National Park authority before planning your visit with a dog.

When is the best time of year to hike this loop?

The best seasons for hiking this loop are spring and autumn. During these times, the temperatures are milder and more pleasant for outdoor activities. Summer months can be very challenging due to strong sun, high temperatures, and limited shade and water availability along the route.

Do I need a permit or pay an entrance fee for hiking in Asinara National Park?

Asinara is a National Park, and while there isn't typically a direct entrance fee for hiking the trails, access to the island itself is regulated. You will need to arrange transport to the island, usually via ferry, which incurs a cost. It's always a good idea to check the official Asinara National Park website for any specific regulations, guided tour requirements, or permits that might apply to certain areas or activities.

What is the terrain like on the Walk to the Ex Carcere Fornelli and Punta li Giorri loop?

The terrain is varied and considered moderate. You'll encounter a mix of accessible paths, including unpaved, paved, and natural hiking trails. Sections, especially towards Punta Li Giorri, can be more impervious with granite rocks and old granite quarries. Sturdy shoes are recommended, and some parts might require a degree of sure-footedness.

What notable features and landmarks will I see along the route?

This loop offers a blend of natural beauty and historical significance. You'll pass by the historic Fornelli Prison, an important site with abandoned administration structures and guard towers. The trail also leads to Punta Li Giorri, known for its beautiful small beaches and coastal views. The 'world of Asinara granite' is a constant companion, with visible granite quarries highlighting the island's geology.

What kind of wildlife can I expect to see?

Asinara National Park is rich in wildlife. Along the trail, you might spot wild goats and herds of mouflon, especially in areas leading to higher ground. During the winter, small temporary ponds serve as a refuge for ducks and herons. The island is also famous for its characteristic species, including the white donkeys, though they are not specifically mentioned along this particular route.

Does the trail intersect other well-known paths?

Yes, this route largely follows the Sentiero del Granito for about 95% of its length. It also briefly intersects with sections of the Sentiero dell'acqua (9%) and the Sentiero del Castellaccio (5%).

Is there water available on the trail?

Water availability on the trail is limited, especially during the warmer months. It is crucial to carry sufficient water for the entire duration of your hike, as there are no reliable sources for refilling along the route. Plan accordingly to stay hydrated.

What should I wear and bring for this hike?

Given the moderate difficulty and varied terrain, wear sturdy hiking shoes with good ankle support. Dress in layers suitable for the season, and always bring sun protection (hat, sunglasses, sunscreen) as shade is limited. Carry plenty of water, snacks, a map or GPS device, and a first-aid kit. Binoculars can enhance your wildlife viewing experience.

Is the Ex Carcere Fornelli prison accessible to visitors?

While the loop takes you past the Fornelli Prison, the prison building itself is not always accessible due to safety reasons. You can explore the surrounding area, which includes abandoned administration structures, guard towers, and former housing for agents, offering a unique historical perspective.

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