Plizio Visual Lab

Valle dell'Ausa

Plizio editorial teamUpdated: Jun 2026Data Sources

valley

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Valle dell'Ausa is one of the most important valley systems in San Marino, carved by the Ausa stream which originates on the slopes of Monte Titano. The valley extends through the municipalities of Borgo Maggiore, Domagnano, and Serravalle before crossing into the Italian province of Rimini. Historically, the valley served as the primary corridor for trade and transportation between San Marino's hills and the Adriatic coast. In the lower part of the valley, particularly in Dogana, most of the republic's industrial and commercial activities are concentrated today. The Ausa river has a length of approximately 8 kilometers within Sammarinese territory and is fed by numerous small brooks. Modern infrastructure, including the main highway (Superstrada), follows the natural contour of the valley floor, connecting San Marino with the Italian A14 motorway. Geologically, the valley is characterized by Quaternary deposits and alluvial soils, providing fertile conditions for agriculture in the peripheral areas. Valle dell'Ausa thus represents the republic's vital link to the outside world and is the engine of the Sammarinese economy.

Location: San Marino
Top sights: Chiesa Sant'Andrea · Oasi WWF Cà Brigida · Eugenio Pazzini
Nearby: Montegiardino di Sotto (4 km)

Best time to visit & climate

The most pleasant time to visit is Jun, Jul, Sep.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	6	6	9	13	17	22	25	25	20	16	11	7
Rain mm	55	71	69	63	69	46	38	47	79	79	88	68

📋 Practical info

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Getting there

This particular main valley in the north of the state is typically excellently accessible via the major transport routes, which lead directly to the extensive, highly fertile plains.

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Best season

The spring and summer seasons are typically the most highly recommended times to visit, as the vast agricultural areas shaped by the meandering river are exceptionally green.

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Terrain & paths

In stark contrast to the surrounding mountains, the terrain in this valley is mostly flat to slightly undulating, which makes walking along the agricultural paths particularly easy.

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What to bring

For pleasant walks in the extremely fertile plains of the valley, light and comfortable footwear is absolutely sufficient; on hotter days, visitors must remember a hat and sunscreen.

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Parking

Vehicles can normally be parked quite easily in the northern settlements located right at the edge of the valley, which serve as highly practical hubs for hikes into the flatlands.

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Safety

Because the valley is very heavily used for agriculture, visitors must constantly watch for tractors and heavy machinery on the dirt roads and always respect the private crops.

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Time needed

A typical excursion into this incredibly wide valley usually takes approximately two to three hours to thoroughly explore the gentle topography and sprawling plains at a calm pace.

Geography

Coordinates

43.97850, 12.45550

Facts

The Ausa river originates at Monte Titano.
The river's length in San Marino is about 8 km.
Flows through Borgo Maggiore, Domagnano, and Serravalle.
Location of the main industrial zone in Dogana.
Route of the historic Rimini-San Marino railway.
The main highway (Superstrada) runs through the valley.

Explore nearby

Notable places around

Serravalle Forest<1 km · EExplore →

Costa della Serra2 km · SWExplore →

Torrente Ausa Wetland2 km · SEExplore →

Caladino2 km · EExplore →

Domagnano Hill3 km · SExplore →

Monte Carllo3 km · SWExplore →

Marano River4 km · SEExplore →

Montegiardino di Sotto4 km · SExplore →

Route planner — Car & Motorhome

Where do you start? We build the route here, with stops and country notes along the way.

Start Destination Via (optional)

Overnight stops

Vehicle

Only stops with (optional): 💧 Water ♻️ Disposal 🔌 Power 🚻 Toilets 🚿 Shower

Sights in the town Valle dell'Ausa (7)

Chiesa Sant'Andrea

Sant'Andrea church is a church building in Serravalle, San Marino.

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Oasi WWF Cà Brigida

A WWF nature reserve in San Marino, protecting local flora and fauna.

🌐 wwf.it

Eugenio Pazzini

A theater in San Marino, named after a local figure.

Chiesa del Suffragio

A church in Verucchio, in the Italian province of Rimini.

Rocca Malatestiana🏰 castle

The Malatesta fortress in Verucchio, Italy, a medieval castle.

Chiesa Della Santa Croce

A church in Villa Verucchio, municipality of Verucchio (RN).

Museo Civico Archeologico🏛 museum

Archaeological museum in Verucchio, Italy, with local finds.

Sights nearby

Frequently asked questions

Is the Ausa valley densely populated?

Yes, it is one of the most economically utilized valleys.

Are there green zones there?

Despite industry, there are parks and riverside paths for recreation.

Can you go cycling there?

Yes, there are flat paths in the valley floor, good for families too.

Does the valley connect San Marino with Italy?

Yes, the Ausa river flows further towards Rimini into the Adriatic.

Is it foggy there in winter?

In the winter months, fog often settles in the valley floor.

Valle dell'Ausa: where is it located?

Valle dell'Ausa is located in San Marino.

Valle dell'Ausa: what is there to see?

Highlights include Chiesa Sant'Andrea, Oasi WWF Cà Brigida, Eugenio Pazzini.

Valle dell'Ausa: when is the best time to visit?