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Road cycling routes
Italy
Sardinia
Sud Sardegna
Murera/Muravera

Costa Rei, Villasimius, and Castiadas Loop

Moderate

4.6

(17)

372

riders

Costa Rei, Villasimius, and Castiadas Loop

02:17

49.8km

590m

Road cycling

Embark on the Costa Rei, Villasimius, and Castiadas Loop for a moderate road cycling adventure through southeastern Sardinia. This route spans 31.0 miles (49.8 km) and climbs 1950 feet (594 metres), taking about 2 hours and 16 minutes to complete. You will experience a diverse landscape, cycling between the vibrant blue sea and green hills, with views towards Punta Molentis. The trail offers a continuous succession of beautiful beaches, small inlets, and promontories, blending asphalt coastal roads with more secluded inland paths. You will also pass through sections of the Sette Fratelli mountains, offering a comprehensive exploration of the region.

This road cycling loop is considered moderate, but it does require a good level of fitness due to the significant elevation gain. While most of the route is on asphalt, be aware that some variations, especially those using the "old SP20," might include unpaved or gravel sections. Plan your ride to allow for potential stops in charming towns along the way, where you can find refreshments and take a break. Always check local conditions before you head out, especially regarding road surfaces.

This loop provides a unique opportunity to explore the Area Marina Protetta Capo Carbonara, showcasing the natural beauty of southeastern Sardinia. You will encounter ever-changing scenery, from the coast to inland areas, giving you a full picture of the region. The route is notable for combining stunning coastal stretches with challenging inland climbs, making it a rewarding experience for racebike enthusiasts. It offers a comprehensive exploration of the area's diverse terrain.

Last updated: April 23, 2026

Waypoints

A

Start point

Parking

Get Directions

1

11.8 km

Former prison of Castiadas

Highlight • Historical Site

The prison was born at the end of the 19th century as an agricultural colony, the prisoners were placed in these areas to reclaim the marshes and create new roads as, due to malaria, this area had been abandoned for many years.
The history of these structures is very interesting.

Translated by Google •

Tip by

2

29.9 km

Coastal Road to Punta Molentis

Highlight (Segment) • Viewpoint

The scenic provincial road to Castiadas and Costa Rei. Going south you will head towards Punta Molentis and its spectacular beach. In the sea you can admire the uninhabited island of Serpentara.

Translated by Google •

Tip by

B

49.8 km

End point

Parking

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Way Types & Surfaces

Way Types

49.8 km

Surfaces

49.8 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 (180 m)

Lowest point (10 m)

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Weather

Powered by Foreca

Monday 13 July

32°C

24°C

0 %

Additional weather tips

Max wind speed: 14.0 km/h

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Comments

September 20, 2025,Giro ad anello da Costa Rei a Villasimius
In the series of bends preceding Punta Molentis (highlight #2), there are recent signs of a major fire that affected both slopes down to the sea. Smoke can still be smelled.

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Frequently Asked Questions

What is the difficulty level of this cycling tour?

This ring tour is generally considered challenging and requires a good to very good level of fitness. It involves significant elevation gain and is sometimes nicknamed "The Death Ride" by expert local cyclists due to its demanding nature. Some variations, especially if they include unpaved sections, might require dismounting.

What kind of terrain can I expect on the route?

The route features a varied landscape, moving between stunning coastlines and inland hills. You'll find undulating paths with a continuous succession of beaches, small inlets, and promontories. Sections like the SP18 coastal road are entirely asphalt, offering beautiful sea panoramas. However, some older provincial roads, such as parts of the SP20, might include unpaved or gravel sections.

Where can I park to start this cycling tour?

You can typically find parking in either Costa Rei or Villasimius, as the tour is a loop connecting these two towns. Specific parking areas depend on your chosen starting point within these localities. Look for public parking lots near the main roads or beaches.

What are the best times of year to cycle this route?

The best time to cycle this route is generally during the spring (April-May) and autumn (September-October) months. During these periods, the weather is pleasant, and the temperatures are ideal for cycling, avoiding the intense heat of summer and the cooler, potentially wetter conditions of winter.

Are there any permits or entrance fees required for this tour?

No specific permits or entrance fees are required to cycle the roads that make up this tour. However, parts of the route pass through the Area Marina Protetta Capo Carbonara. While cycling on public roads within the protected area is generally permitted, always respect local regulations, especially regarding waste disposal and environmental protection.

Is the Ring tour from Costa Rei to Villasimius dog-friendly?

As this is a road cycling tour, dogs are generally not suitable companions for the ride itself due to safety concerns on public roads. If you plan to stop at beaches or other attractions, check local regulations regarding dogs, as many beaches in Sardinia have restrictions, especially during peak season.

What notable sights or viewpoints will I encounter?

The route offers breathtaking coastal and mountain views. You'll pass by the Former prison of Castiadas and enjoy the scenic Coastal Road to Punta Molentis. Other notable scenic points include Capo Carbonara, panoramic views of the sea and Serpentara island, and Porto Giunco.

Are there places to stop for refreshments or food along the way?

Yes, the route passes through charming towns and villages, particularly Costa Rei and Villasimius, where you can find cafes, restaurants, and shops for refreshments. Even along some of the provincial roads, there might be opportunities to stop for a break, especially in smaller hamlets.

Does this route intersect with any other well-known trails?

Yes, while primarily a road cycling route, it does briefly intersect with or run parallel to some other paths. You might encounter sections that are part of the 'via Campidano' (3% of the route) or 'Str. per Monte Turno' (1%).

What should I bring for this road cycling tour?

Given the challenging nature and distance, it's essential to bring appropriate road cycling gear, including a well-maintained bike, helmet, suitable cycling apparel, water bottles (with sufficient water), energy snacks, a basic repair kit (spare tube, pump, tire levers), and sun protection. A phone for navigation and emergencies is also recommended.

What makes this ring tour unique compared to other routes in the area?

This tour is highly regarded for its comprehensive exploration of southeastern Sardinia, uniquely combining both demanding mountain roads and splendid coastal routes. It offers a continuous succession of vibrant sea panoramas and lush inland scenery, providing a diverse and memorable cycling experience that showcases the region's natural beauty.

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