4.3
(384)
1,361
hikers
20
hikes
Family friendly hiking trails in Riserva Naturale Basso Merse traverse a landscape characterized by riverine ecosystems, rolling hills, and Mediterranean scrub. The reserve, located in the provinces of Siena and Grosseto, Italy, protects the Merse, Farma, and Ombrone river habitats. Elevations generally remain below 400 meters, offering accessible terrain for various hiking abilities. Unique geological formations of serpentinite rock also contribute to the distinct flora and scenery found along the trails.
Last updated: May 29, 2026
5.0
(3)
7
hikers
10.2km
02:50
190m
180m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
3.8
(18)
44
hikers
14.3km
04:09
360m
360m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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1
hikers
2.63km
00:47
80m
80m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.0
(3)
7
hikers
17.0km
04:55
430m
430m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
3
hikers
9.04km
02:43
290m
280m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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The thermal water springs from the ground at 40° and creates several pools, forming a real little thermal bath.
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Mandatory pit stop at the Petriolo spa, the water has a temperature of 42°. There is a food truck where you can eat very well.
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A beautiful town, not too famous, making it even more authentic and less frequented.
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The former railway line has been opened up for tourism for hikers, cyclists and horse riders. Many information boards tell the story, benches invite you to linger. The structures (bridges, gorges, etc.) are interesting. However, the route is damaged in some places, so the passage by bike is not very easy (short, narrow, steep path). Impossible with the horse. Here is the official information: On the tracks of the railway from Miniere di Murlo This trail follows the first part of the railway track that served the mining village of Murlo. The railway began operations in 1877, transporting lignite and lime produced here to the coastal Grosseto region and northern Italian markets. It was believed that only a fast transportation system like the railway could compete with the great distances that separated Murlo from the main commercial centers. The Società Anonima della Miniera Carbonifera di Murlo was the company that built the standard gauge railway (143.5 cm) and initially operated the mining business (1872-1876); In this phase, the railway reached Volta al Salcio, near Monte Antico, where it joined the Siena-Monte Amiata-Grosseto national railway line. Mining activity was continued by the Compagnie Francaise des Charbonnages de Pienza (1876-1885) and the Società Generale per l'Industria delle Ligniti Italiane (1886-1894) and then ceased for about 25 years until the Società SAI-Ansaldo built the disused one in 1918 railway line and converted it into a narrow-gauge railway (95 cm), which was more economical and sufficient for the small locomotives used. Ansaldo ceased operations in 1922 when the last section of the mining railway (between La Befa and Monte Antico) was expropriated for the construction of the Siena-Buonconvento-Monte Antico line, which was completed in 1927. A new management of the Murlo mines only began in 1940, when the Società Miniere Carbonifere di Murlo converted the railway into a narrow-gauge "Decauville" type (60 cm) that was even cheaper, easier and quicker to lay. to La Befa; A warehouse was built here from which lignite was loaded onto trains on the new route to Grosseto. When the railway to Grosseto became unusable after the German damage in 1944, mining activity was stopped again. Finally, the management changed from 1951 to 1968 to Società Calce, Cementi, Carboni e Laterizi di Murlo, which was actually never active. Information about the route: Distance: 7 km Time: 1 hour and 40 minutes Total ascent: -188 m Difficulty: easy trail, all downhill to La Befa train station. Hiking shoes or boots and a good supply of water are required. The route can be covered on foot, by bike or on horseback. The last section between Molino della Befa and the train station is passable but has little traffic. For the way back on the same path, a total ascent of +188 m and about 2 hours can be expected.
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Bridge over the crevole river in the path on the route of the old murlo mines railway
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The Farma is an Italian torrent, which flows in the Tuscany region, between the provinces of Grosseto and Siena. Source: https://it.wikipedia.org/wiki/Farma
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The Terme di Petriolo are a Tuscan thermal spring. The location is in the Ombrone Valley, along the course of the Farma river, on the border between the municipalities of Monticiano and Civitella Paganico, respectively in the province of Siena and in that of Grosseto. Source: https://it.wikipedia.org/wiki/Terme_di_Petriolo
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The Riserva Naturale Basso Merse offers a good selection of family-friendly hiking trails. Our guide features 17 routes suitable for families, ranging from easy strolls to more moderate adventures.
Yes, there are easy trails perfect for families with young children or those new to hiking. For example, the Petriolo Thermal Baths loop from Bagni di Petriolo is a relatively short and flat option, allowing you to enjoy the natural beauty without significant effort.
Family hikes in Riserva Naturale Basso Merse often follow the beautiful riverine ecosystems of the Merse and Farma rivers, offering chances to see diverse wildlife like kingfishers. You'll also pass through oak woods and Mediterranean scrub, and some areas feature unique serpentinite rock formations with special flora.
Absolutely! A popular attraction is the Petriolo Thermal Baths, where you can relax in warm natural waters. Some routes, like The Farma stream and the baths of Petriolo, lead directly to or near these baths. The reserve also features a converted old railway line, now a tourist path with interesting bridges and gorges, and the striking Hermitage of Montespecchio (Conventaccio) can be reached on some trails.
Spring and autumn are generally the most pleasant seasons for family hikes. In spring, the unique flora on the serpentinite rocks bursts with colorful flowers. Autumn offers milder temperatures and beautiful foliage. Summer can be warm, so early mornings or late afternoons are best, especially if you plan to visit the thermal baths afterwards.
Yes, many of the trails are designed as loops, which are ideal for families as you end up back where you started. An example is the Farma Stream – Petriolo Thermal Baths loop from Bagni di Petriolo, offering a scenic circular journey.
The area is highly rated by the komoot community, with an average score of 4.3 stars. Reviewers often praise the peaceful natural surroundings, the beauty of the rivers, and the unique experience of visiting the Petriolo Thermal Baths after a hike.
Yes, parking is generally available at common access points, particularly near popular spots like Bagni di Petriolo. It's always a good idea to check specific route details for recommended starting points and parking information.
While the reserve is characterized by river valleys and rolling hills, some trails offer lovely vistas. For instance, the View of Val d'Orcia – Ponte Nero loop from Montepescini provides glimpses of the wider landscape, including parts of the Val d'Orcia.
For any family hike, especially those with varied terrain, we recommend sturdy footwear, plenty of water, snacks, sun protection, and appropriate clothing for the weather. Some trails, like those leading to the Hermitage of Montespecchio, can be rocky and sloping, requiring good grip.
Absolutely! The Petriolo Thermal Baths are a fantastic way to relax after a hike. The converted railway line is also suitable for cycling, offering another way to explore the reserve. Additionally, the clearings within the reserve are excellent for birdwatching, especially for birds of prey.


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